How to modify descr_strat without causing problems in the script...

[Atraphoenix]

you have to delete map.rwm file in campaign folder an sp edu backup folder, if you forget sp game edu backup folder puts its own map.rwm file.
after you start a new campaign game automatically produces one then copy it sp edu backup folder.
If you mod descr_strat you always have to perform this procedure to avoid CTD.
if you use trivial script it will give you a message there is no map.rwm file, ignore it after you open the campaign. save game exit find map.rwm file in campaign map folder then replace as ı said before to sp edu backup folder.

if you did not make any coding mistake like putting ; instead of , etc.
game will work without any problem . if you still have crashes after exactly you processed the procedure above that means you have made scripting error that game engine does not recognize descr_strat file because of mistakes in it.

I hope it helps.

P.S. also misspelling traits and ancillaries will give a certain CTD.
Plus you are asking on the wrong forum, next time use technical help forum.

Atra