Im trying to figure out why my Camera Raw plugin seems to have stopped working. I am using CS3, with the 4.5 plugin installed in the correct place, and my camera is the digital rebel XSi, which is on the list of supported cameras with the 4.5 plugin. The plugin was working for me fine for a while, and then when i tried to use it today it said that it was an unsupported file format when I opened it in Photoshop, and none of the camera raw preferences are showing up in bridge. I just recently installed Lightroom 2, would that have affected it in any way? Any help on this matter would be appreciated. I am on a MacBook Pro, running 10.5.4. Thank you!