Yeah usually in descr_strat you can get away with one-off edits without receiving crash to desktop (CTD) or kick to menu (KTM) because you are editing the end result before you start a new imperial campaign.

Which buildings did you edit? If you changed the various core buildings of a settlement, you need to change the level (which consist of village, town, large_town, (minor_)city (I always forget this one ), large_city, huge_city) so that it matches the core building type. The core buildings are as follows:

none --- used in village
governors_house --- used in town
governors_villa --- used in large_town
governors_palace --- used in (minor_)city
proconsuls_palace --- used in large_city
imperial_palace --- used in huge_city

You can safely remove most building types without receiving a CTD / KTM, I've got several 'empty' villages at the start of a new imperial campaign owned by the various rebel tribes across the map.

Also try this:

* On the desktop, right-click the RTW shortcut (if you don't have one, make one )
* Click Properties
* Select the Shortcut tab
* In the Target textbox, add the following (leave a space between the existing target location and what you are about to enter):

-show_err

Now when you encounter problems whilst modding, you may receive an error message advising you of which text file(s) the game doesn't like, but this is not always the case.