Great tip MoP. That fixed the problems I was having with the BMP files I had been using in the past. The best part is knowing that this will probably never be fixed within Maya. :)
I noticed that bmb work, but after a few overwrites they dont get recognized anymore for some mysterious reason (it fucked up the tool deploys at a previous jobs, as sometimes the shelf icon where just not showing not) COME ON MAYA at least try to do that one right :P
They have to be .DIB or .XPM format. I usually convert TGAs to XPM using Autodesk's "imgcvt" utility that comes with Maya. It should be runnable from any location since it's in the global Maya path, you can just do the following: 1. Start -> Run -> "cmd" 2. Navigate to your icons folder ( DOS style command like "cd…