Dang, I can't be arsed to finish one mission w/o problems it seems.
I am now in an Muton UFO recovery mission.
If I fire an HE bullet with my enhanced tank the explosion causes a game crash.
I inspected the code and it's line 1170 of Map.cpp, the tmpsurface returned by _res->getsurfacesets("X1.PCK")->getFrame() is NULL, but I can't tell why....the PCK is there and seems uncorrupted.
Yesterday after the previous "fix" I was able to fire rockets no prob.
I will try a "fresh" install mods included...
EDIT: a clean install does not solve the problem....
EDIT2: seems it has to do with my modified HWP Cannon Shells which I made HE....firing from another HE weapon such as the rocket launcher does not crash the game.
I'm clueless on how to deug the thing....besides, this has always word fine until recently since I have upgraded fetch & merging the latest git...