I have to agree with everything rharv and LynB said, but if you can't sort a problem quickly, sometimes it's better to re-install PT. This does, I admit, seem to be my answer to most things, but think about it - a re-install takes what? About five minutes!

If you've made a safety copy from when you first installed and after you'd got your toolbar and windows arranged, you can simply delete the PT folder and load the safety copy. This takes about two minutes and means you don't waste time setting things up again. If you up-date the safety copy from time to time, it will even preserve your templates and plugin lists.

It won't solve every problem, but it should cure anything associated with a corrupted file.

Hey, it's Christmas Eve - happy Christmas everyone!

ROG.