I used Bridge CS2 and Camera Raw 3.7 to batch process about 1500 Raw CR2 files from a Canon 20D down into basic jpg files. I got about 1200 pictures done and all of a sudden it started giving me an error saying, "there was an error writing to the file." It appears that it will no longer process any CR2 files. It gives the same error for each file as it processes, with no more helpful information.
I tried changing various settings and processing different images taken from different times in the past and I now get the same error with all of them.