Hi, I’m running a per-frame script to display the time in a MD movie. I used to run it without problems until I downloaded the new Mac OS X 64-bit 1.11 version. (I erased the old app, also tried to re-download the old version with no success). More specifically, I load the MD movie, and in the command line I write: 2dlabels create timer text "0 ns" color white ypos .9 xpos .9 size 50 then I open a per-frame script with the following commands: from Chimera import runCommand runCommand("2dlabels change timer text '%.1f ns'" % (mdInfo['frame']*0.02)) and get the error: Problem in per-frame script: ImportError: No module named Chimera I’ve googled it and found this reply: [Chimera-users] How to install chimera as a python module http://www.cgl.ucsf.edu/pipermail/chimera-users/2014-July/010120.html I’ve tried setting the $CHIMERA_PATH environment variable to /Applications/Chimera.app/Contents/Resources/share but I still run into the same problem. Now, I don’t want to run the script directly from the command line, as it’s a per-frame script I have to run after I load the MD movie and create the 2dlabel object. Anything obvious I’m missing here? Cheers Juan