moints semi: failed to open half int file


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7:43:44 AM PDT - Wed, Jul 11th 2012
Hi there,

I have another input file that has the following error with NWChem 6.1

moints_semi: failed to open half int file        0

However the same input works fine with NWChem 6.0. What is the problem?

The input.nw is

echo
start ch2ocho
title "ch2ocho"
print medium

geometry
 zmatrix

   C

   C  1  r2

   H  1  r3  2  a3

   O  2  r4  1  a4  3  d4

   O  1  r5  2  a5  3  d5

   H  2  r6  1  a6  3  d6

   H  1  r7  2  a7  3  d7

   H  5  r8  1  a8  2  d8

   variables

     r3  1.1097

     a3  107.49

     r4  1.2213

     a4  121.36

     d4  237.10

     r5  1.4010

     a5  111.44

     d5  237.10

     r6  1.1165

     a6  116.81

     d6  303.04

     r7  1.1098

     a7  107.56

     d7  114.01

     r8  0.9737

     a8  103.68

     d8  359.68

   constraints

     r2  8.0

 end
end

basis
 o   library aug-cc-pvtz

 h   library cc-pvtz

 c   library aug-cc-pvtz
end

scf
 uhf

 triplet

 maxiter 200
end

mp2
 tight

 scratchdisk 512
end

property
 mulliken

 electrondensity
end

task mp2 energy

Thanks,

Yudong