From: Enrique RamÃrez [me@enrique-ramirez.com]
A while ago, while on project view, I dragged a .gif file from the project drawer to the main textmate window, which opened the file in the text editor. I simply closed it and move on.
Sounds like you should tell TextMate to treat GIF files as binary.
Right-click on a GIF file in your project drawer, and choose "Treat Files with ".gif" Extension as Binary." Probably just got changed somewhere along the way; by default it should be treated as Binary. To my knowledge, dragging a binary file into the text editor shouldn't change that setting, but maybe it does.
Dru