How to force GUIDE to re-generate fresh callbacks?

Something happened between last night and today, and my GUI file with all my callbacks is somehow corrupted. It looked fine yesterday. There's another user on this computer, and Matlab crashed during a data analysis run, so it's possible that this event somehow caused it. Anyway, I still have pretty much all the code for the callbacks. I just want to get a fresh file with all the callbacks empty, similar to what gets generated when you save the GUI for the first time.

By the way, before you bring this up, no, there is no .asv file available.

Your help much appreciated!

[Jan]

What about the backup mechanism of your operating system? Are there any "earlier versions" of your files stored on your hard disk? If not, why?

You have the code with the callbacks, but you want a file with empty callbacks? Itz would take just a minute to delete the callback's contents with the editor, so what is the problem?