The Pelles IDE crashes and tells me a backup copy from a previous session do you want to replace the current file with the backup copy (recommanded)? crap.
I use Pelles C for Windows Version 7.00.355
When the crash occurs the code window probably RichTextBox is completely white moving anything into that white area like a notepad or ms paint cases tons amount of error messagebox's pretty much something wrong with the WM_PAINT or something like that.
Here is a screenshot
(http://forum.pellesc.de/index.php?action=dlattach;topic=6194.0;attach=2748)