CDFT: Unable to improve the multipliers 0


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I am running into some trouble with a CDFT run. I have two c60 molecules and want to constrain an extra charge to only one of them. The input looks like this:


geometry noautoz noautosym                                                                                                                                                                
C  +81.489381446 +13.112890436 +166.873903869                                                                                                                                             
C  +78.962304344 +17.150679902 +166.106934122                                                                                                                                             
C  +75.609428653 +11.624753147 +164.558898327                                                                                                                                             
C  +80.887578721 +13.497489794 +168.136940890                                                                                                                                             
C  +81.654772483 +14.057818439 +165.864884969                                                                                                                                             
C  +80.474467315 +14.811617587 +168.338957375                                                                                                                                             
C  +79.213643788 +15.082316355 +169.005986226                                                                                                                                             
C  +80.055767208 +12.397859908 +168.590953045                                                                                                                                             
C  +78.846344668 +12.657058644 +169.229980338                                                                                                                                             
C  +78.416032945 +14.027387306 +169.440997770                                                                                                                                             
C  +80.926744528 +12.422388720 +164.172843251                                                                                                                                             
C  +80.755153509 +11.436659416 +165.224863371                                                                                                                                             
C  +81.367753872 +13.705317838 +164.485853591                                                                                                                                             
C  +81.030471236 +11.774860562 +166.546893144                                                                                                                                             
C  +80.144462506 +11.333141652 +167.608923400                                                                                                                                             
C  +79.581825586 +10.643040003 +164.907862784                                                                                                                                             
C  +78.732217206 +10.218321663 +165.925891753                                                                                                                                             
C  +79.019136327 +10.571522382 +167.304922607                                                                                                                                             
C  +79.737898879 +14.679844708 +162.916839020                                                                                                                                             
C  +79.278289090 +13.342114349 +162.590828471                                                                                                                                             
C  +80.760030750 +14.857246056 +163.845851841                                                                                                                                             
C  +79.860811311 +12.236887167 +163.205830243                                                                                                                                             
C  +79.029599901 +11.136556636 +163.659842388                                                                                                                                             
C  +77.839854110 +13.394612717 +162.404838337                                                                                                                                             
C  +77.042142721 +12.339583651 +162.839849352                                                                                                                                             
C  +77.649966410 +11.187454858 +163.481851436                                                                                                                                             
C  +79.564407112 +16.765580466 +164.842897456                                                                                                                                             
C  +78.497973811 +16.580078913 +163.875884453                                                                                                                                             
C  +80.672535122 +15.922764450 +164.827881479                                                                                                                                             
C  +78.582769771 +15.559061399 +162.933855997                                                                                                                                             
C  +77.409842437 +14.765041397 +162.615855237                                                                                                                                             
C  +77.236750739 +16.849777517 +164.541913134                                                                                                                                             
C  +76.111424031 +16.088158777 +164.237912341                                                                                                                                             
C  +76.200419907 +15.023940077 +163.255882696                                                                                                                                             
C  +80.646958495 +15.797246871 +167.287937414                                                                                                                                             
C  +79.492229444 +16.676463569 +167.303953690                                                                                                                                             
C  +81.224260727 +15.427847580 +166.075901872                                                                                                                                             
C  +77.523469287 +17.203178275 +165.919943824                                                                                                                                             
C  +78.605920656 +16.234145092 +168.364983778                                                                                                                                             
C  +77.226087120 +16.285143336 +168.185993719                                                                                                                                             
C  +76.674060939 +16.778860003 +166.937972792                                                                                                                                             
C  +74.766005535 +14.308709513 +164.972931879                                                                                                                                             
C  +75.225215257 +15.646739922 +165.298942963                                                                                                                                             
C  +75.500033428 +15.985340605 +166.620972213                                                                                                                                             
C  +74.601614137 +13.363681495 +165.981950768                                                                                                                                             
C  +75.781819807 +12.610282420 +163.506878728                                                                                                                                             
C  +75.368408352 +13.924010146 +163.708894683                                                                                                                                             
C  +75.031925860 +11.993652884 +165.770933867                                                                                                                                             
C  +76.691379409 +10.655319366 +167.003938284                                                                                                                                             
C  +77.294082276 +10.270920050 +165.739901616                                                                                                                                             
C  +76.763957671 +10.745436432 +164.542882052                                                                                                                                             
C  +75.583852028 +11.498735485 +167.018954259                                                                                                                                             
C  +76.518388242 +12.742055299 +168.928996553                                                                                                                                             
C  +77.673916899 +11.862638570 +168.912979739                                                                                                                                             
C  +77.758512827 +10.841120972 +167.970951282                                                                                                                                             
C  +75.496256383 +12.564153862 +168.000983897                        
C  +75.329042510 +14.999411269 +167.672992326                                                                                                                                             
C  +76.394775693 +15.185112855 +168.640005337                                                                                                                                             
C  +76.977397931 +14.079685640 +169.255007637                                                                                                                                             
C  +74.888232671 +13.716282648 +167.359981983                                                                                                                                             
C  +72.434019535 +1.721432016 +166.588379359                                                                                                                                              
C  +69.624051952 +5.636960878 +166.808023047                                                                                                                                              
C  +76.046464092 +7.067439885 +165.871815118                                                                                                                                              
C  +71.873175616 +1.930709576 +165.266097872                                                                                                                                              
C  +71.815895037 +2.280483436 +167.703427675                                                                                                                                              
C  +70.717821604 +2.692155936 +165.113361198                                                                                                                                              
C  +70.611580686 +3.639621896 +164.018493844                                                                                                                                              
C  +72.973312651 +2.086791450 +164.332247834                                                                                                                                              
C  +72.872082783 +2.995594072 +163.282283565                                                                                                                                              
C  +71.666901507 +3.788914668 +163.122889853                                                                                                                                              
C  +74.005511418 +2.914277756 +168.636261426                                                                                                                                              
C  +74.650258453 +2.330558011 +167.474128202                                                                                                                                              
C  +72.618179461 +2.889326982 +168.749135316                                                                                                                                              
C  +73.880838598 +1.746764566 +166.471508118                                                                                                                                              
C  +74.213738690 +1.972293146 +165.076558534                                                                                                                                              
C  +75.784952205 +3.165218321 +167.124300598                                                                                                                                              
C  +76.105283890 +3.381292413 +165.786825860                                                                                                                                              
C  +75.302478375 +2.772911387 +164.741423897                                                                                                                                              
C  +72.615674629 +5.204131077 +169.590283172                                                                                                                                              
C  +74.062272054 +5.229970088 +169.472854998                                                                                                                                              
C  +71.909082338 +4.058483080 +169.235086254                                                                                                                                              
C  +74.742707639 +4.108510454 +169.006042627                                                                                                                                              
C  +75.842960682 +4.263504368 +168.071724630                                                                                                                                              
C  +74.452594959 +6.554117861 +169.024727274                                                                                                                                              
C  +75.507916453 +6.703304541 +168.128903184                                                                                                                                              
C  +76.216750616 +5.533621346 +167.641877480                                                                                                                                              
C  +70.185059152 +5.427190798 +168.130411133                                                                                                                                              
C  +70.922153679 +6.621683085 +168.499478981                                                                                                                                              
C  +70.667572538 +4.172102513 +168.491068209                                                                                                                                              
C  +72.112020955 +6.512721214 +169.214160122                                                                                                                                              
C  +73.247181979 +7.347114463 +168.865231870                                                                                                                                              
C  +70.817350372 +7.569569543 +167.405367441                                                                                                                                              
C  +71.906252217 +8.370280200 +167.070569944                                                                                                                                              
C  +73.146169115 +8.255842002 +167.815214951                                                                                                                                              
C  +70.072676163 +3.274821975 +166.275387301                                                                                                                                              
C  +69.569104434 +4.583269300 +165.899936702                                                                                                                                              
C  +70.611036370 +3.073916284 +167.543611917                                                                                                                                              
C  +70.014620072 +6.961621448 +166.360360843                                                                                                                                              
C  +69.902940410 +4.809201422 +164.505340214                                                                                                                                              
C  +70.276825739 +6.079437372 +164.075710884                                                                                                                                              
C  +70.334526380 +7.177508332 +165.022852827                                                                                                                                              
C  +73.685938800 +8.621809714 +165.558915259                                                                                                                                              
C  +72.239073422 +8.596244359 +165.675897213                                                                                                                                              
C  +71.469352092 +8.013010354 +164.673208273                                                                                                                                              
C  +74.303870397 +8.061722032 +164.443964672                                                                                                                                              
C  +75.401649579 +7.650460580 +167.034437296                                                                                                                                              
C  +74.246519783 +8.411966847 +166.881223089                                                                                                                                              
C  +75.508715324 +7.268517880 +164.603616085                                                                                                                                              
C  +75.935220781 +4.915156051 +164.016256299                                                                                                                                              
C  +76.495512526 +4.705243147 +165.339139486                                                                                                                                              
C  +76.550237245 +5.759194424 +166.247287612                                                                                                                                              
C  +75.452083841 +6.170123177 +163.656273167                                                                                                                                              
C  +73.503836962 +5.138500297 +162.557371983 
C  +74.007426975 +3.829406184 +162.933360663                                                                                                                                              
C  +75.197679089 +3.720157850 +163.647375516                                                                                                                                              
C  +74.210806853 +6.283837825 +162.912514798                                                                                                                                              
C  +72.114180460 +7.428675763 +163.511204469                                                                                                                                              
C  +71.376905948 +6.234767594 +163.141448789                                                                                                                                              
C  +72.057453615 +5.113184621 +162.674934286                                                                                                                                              
C  +73.501538100 +7.453353303 +163.398220198                                                                                                                                              
end                                                                                                                                                                                       
basis                                                                                                                                                                                     
 * library 3-21g                                                                                                                                                                          
end                                                                                
memory 1500 mb                                                                                                                                                                            
charge -1.0                                                                                                                                                                               
dft                                                                                                                                                                                       
 xc xpbe96 cpbe96                                                                                                                                                                         
 direct                                                                                                                                                                                   
 iterations 100                                                                                                                                                                           
 odft                                                                                                                                                                                     
 mult 2                                                                                                                                                                                   
 cdft 1 60 charge -1                                                                                                                                                                      
end                                                                                                                                                                                       
task dft 


The error occurs early...

          
        Memory utilization after 1st SCF pass:
             Heap Space remaining (MW):       47.69            47686129
          Stack Space remaining (MW):       49.11            49113505
   convergence    iter        energy       DeltaE   RMS-Dens  Diis-err    time
 ---------------- ----- ----------------- --------- --------- ---------  ------
 d= 0,l s=0.0,diis     1  -4540.6409092047 -2.81D+04  2.30D-03  3.38D+00   172.6
                                                     1.94D-03  3.38D+00
 CDFT multipliers:
      1       -0.0233316383
      iter =    9
 CDFT: Unable to improve the multipliers        0
 ------------------------------------------------------------------------
 An error occured in the Runtime Database
 ------------------------------------------------------------------------ 
  ------------------------------------------------------------------------
 An error occured in the Runtime Database
 ------------------------------------------------------------------------
 For more information see the NWChem manual at 
 http://nwchemgit.github.io/index.php/NWChem_Documentation


 For further details see manual section: 
                                                                                
                                                                                
                                                                                
                   
2:2:CDFT: Unable to improve the multipliers:: 0
(rank:2 hostname:thinc008 pid:5049):ARMCI DASSERT fail. ../../ga-5-1-1/armci/src/common/armci.c:ARMCI_Error():208 cond:0
 CDFT: Unable to improve the multipliers        0
 ------------------------------------------------------------------------



The latter error is repeated for tasks 3-8 as well. Has anyone encountered this before?