Last night I checked all files with CivChecker and fixed all art file problems (some of them are also in normal BtS) and found couple other bugs as well with civchecker. Repacked pak files but didn't start new game yet with the changes so don't know yet how all works now on late game eras - there's been other bug fixes as well for 2.3 version. I'll try to add 4 remaining buildings (corporation specific) from my to do list next week and then I can probably release it.
Bring it on!!! Thanks for tracking down these bugs, I haven't hit one yet, but good to know you're on top of it.