This error occured while I was on Maya 2016 on Windows 8.1 64 bit and Maya 2016 on Mac OSX Yosemite. The same exact error when trying to open the pose tools from the Animation & Rigging Tools window.
Line 3993 of Art_animaitonUI.py reads
Any help would be appreciated, thanks.
I also have this issue and I would love to be able to use the pose editor. I’m working in Maya 2015 on a Mac OSX and a Windows. Whenever I click on the pose editor button this same error pops up.
I don’t know if you still need help with this but I found a solution:
I had this very same problem on my Mac in Maya 2015. I figured that the syntax error was not actually concerning the ART_animationUI.py but in fact the ART_poseEditor.py. So I just went to the ART tool dropbox (here) and downloaded this version of the ART_poseEditor.py. Then I removed my error filled ART_poseEditor.py to my desktop (just in case this didn’t work) and replaced it with the new downloaded file. Once I fired up maya; tada the pose tool worked!
BTW the ART_poseEditor.py script goes in the scripts folder.
I hope this was helpful!