There seems to be a bug in the code that allows for a plugin installation -- at least on the Linux .98rc3 version:
In ...pymol/modules/pmg_tk/skins/normal/__init__.py , after first fixing the typo 'install_plugin()' -> 'install_plugins()' (as has already been reported), there still seems to be a bug in checking for write permission on the plugin dir which always leads to: Error: Unable to write to plugin directory (insufficient privileges?) This reflects my situation: >>> os.path.split(__file__) ('/home/heiland/pymol/modules/pmg_tk/skins/normal', '__init__.py') >>> os.path.split(__file__)[:-2] () --Randy