ECCE not running on Fedora 22 - libgiolibproxy.so
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Gets Around
11:28:46 PM PDT - Sun, Aug 16th 2015
This might help:
https://github.com/ContinuumIO/anaconda-issues/issues/368
Also,
https://support.insynchq.com/t/new-insync-version-1-2-11/1367/10
Otherwise consider compiling ECCE from source and see whether that solves the issue.