Random "Unspecified Error" CTD's

Last night, I made a few final changes to my latest mod. Play tested it. Everything worked fine.

Tonight, I start up the mod using the same shortcut I used last night. I haven't changed any files within the mod. Nothing at all. Not a .tga, a .txt or anything.

Now my mod gives me the dreaded "Unspecified error" CTD everytime I hit the start button on the faction selection screen.

Any ideas what's going wrong here? As I said, I haven't made a single edit anywhere in the mod's files.

Maybe some issue of not deleting map.rwm last evening?