The xpra clients 0.16.0-r10472 and 0.16.0-r10504 downloaded from http://xpra.org/beta/osx/ could not be launched.
This is the error I'm getting when I try to launch them from MAC OSX 10.10.3:
Kenneth-Baker:Desktop maint$ cd xpra-16.0-r10472/Xpra.app/Contents/MacOS/ Kenneth-Baker:MacOS maint$ ./xpra attach tcp:10.0.32.147:2200 ImportError: could not import gtk Fatal Python error: can't initialize module gtkosx_application: Abort trap: 6 Kenneth-Baker:MacOS maint$
Kenneth-Baker:Desktop maint$ cd xpra-16.0-r10504/Xpra.app/Contents/MacOS/ Kenneth-Baker:MacOS maint$ ./xpra attach tcp:10.0.32.147:2200 ImportError: could not import gtk Fatal Python error: can't initialize module gtkosx_application: Abort trap: 6 Kenneth-Baker:MacOS maint$
This was caused by some moduleset breakage (#971), newer builds don't have this problem.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/974