I'm afraid we haven't run into this before, so it's hard to say what's happening or offer suggestions. I wonder if you are using a Mac laptop without a mouse when you run into this? Does it help if you attach a mouse? - Peg Exelis VIS

I have not heard of this issue before but it does sound specific to your system. Is it possible to run the mac version (not on parallels) of ENVI and see if the problem persists? You might also try removing the configuration files to see if there is something unusual going on with them. You can just move the entire .idl directory from your home and relaunch ENVI. ENVI will recreate the directory as if it is a new installation. See if this helps. I also remember an issue with the CURSOR procedure on Mac/X11 and while I am not sure it is related, it might be worth trying as well: http://www.exelisvis.com/Support/Help...