I went to try and figure out if a certain format was causing the problem and found an even more interesting phenomenon. If I highlight a group of 10 books and run Extract ISBN, I get the error I described earlier. However, I can choose each book individually and run Extract ISBN on each one and it never errors. Are we looking at the same thing? Still a call to existing Calibre code causing the problem?
* Update *
I got a virtual memory warning on my machine (first I've ever seen) and found that there were about 50 Dr. Watson process running and each one of them was tied to a calibreparallel process. After I killed all of them and restarted Calibre it appears that it's attitude has changed. I am still getting Windows Exception errors but they aren't stopping the process.
Last edited by jlutes; 08-08-2011 at 11:29 PM.