Yes, the BCs cause two other bugs - one connected in some way with the unit info and (believe it or not) cas/texture files (how the 2 are related I do not know), and the 2nd with the *number* of BC units in a building - this latter CTDs long before you get to the chance of right-clicking units (usually on trying to open or build the building, sometime at campaign start when you just click on the settlement). Tests show that more than 4 BC units in the same building cause this ctd to activate.

Anyway, no BC units anymore - they are too buggy.

TIP

If anyone is still using them one thing we were doing was to change all building names from vanilla "word1 word2" to "[space]-[space]word1 word2[space]-" which makes it look reasonable in all places it occurs inc. the unit list requirement in the building scroll.