Error: Bad file header (J.A.C.K) Created 2 years ago2022-11-06 17:19:39 UTC by NintyFan290

Hello all, I just tried to load up a map I've been working on but J.A.C.K gives me a "bad file header" error when trying to load (none of my other maps give this error). Does anyone know of a fix for this and why it happens? Would be much appreciated :/

Adding to this, just managed to load the .map file, it was the .jmf file that was giving me the error and seems to be corrupted/broken/whatever