Three line script, and I got it wrong. Release 1.01 fixes the bug.

Oh, and another thing, although I has saved my best solutions in the expectation that I would be able to call them up once the reload was complete, they are lost, which means that I have several thousand points to regain.....
Whether it is relevant or not, I don't know, but I'm running the 64bit version of W7 although nothing else seems affected.

Foldit has always had problems with lots of bands, especially on low end computers. I think it is probably a memory leak. It is recommended that you save frequently if you have crashes.

Still, if you crash, you can sometimes recover your lost save. Select Open/Share Solutions, then click the checkbox for autosaves. Look through the saves that appear and you can frequently recover one that is at least close to your maximum score.