I pulled the latest update of TC to version 188.8.131.52494
When I extracted dbc and maps from retail (184.108.40.206494) some of them couldnt be readed or couldnt be opened. I will give you an image of the mapextractor.exe. Also I have different locales on my WoW Client, and some of them can open on different locales, meanwhile not in others. For example, the extractor could read Achievemnt.db2 from esES locale, but not from enUS.