/usr/lib/python2.6/dist-packages/archipelagentvmcasting/appliancedecompresser.py is in archipel-agent-vmcasting 0.6.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/archipelagentvmcasting/../../../../share/pyshared/archipelagentvmcasting/appliancedecompresser.py