Quote Originally Posted by Meghas Alexandros
always make a back up (the original) file of the actual descr_strat in your documents(or else where, besides the data folder. the last rule also applies to anyfile you modify. MAKE A BACK UP IN CASE SOMETHING GOES HORRIBLY WRONG!!!!!!!
and always use -show_err in the command line. on your desktop, right click on the RTW shortcut, and click properties. at the end of the target line, add
-show_err.

hope it helps. if anything goes wrong, the -show_err should tell you whats wrong. if it doesnt, post it here, and someone will help you.
true, true

and if you happen to make multiple modifications, keep a notepad about what you have modified, it can be something as simple as:
"EDB, temple mars => victory+EDA ancillaries"

it's a simple reminder, and it can be a lifesaver
in case something goes wrong, just go to your backup and replace the part you modified in your data folder with the original.