Eternal Doom MAP26 malformed map hack causing memory release error
See: forum thread
Just a quick note to say that I can replicate the problem and am looking into a fix. The crash has nothing at all to do with savegames (yours is not corrupted) and is in fact an issue with interpreting a seemingly malformed map hack on MAP26, which is leading to a memory release error when switching to another map. Interestingly, it doesn't occur if one loads MAP26 and then warp to another map immediately.