Ok, so everything works fine except for the BA-Beta campaign that is buggy as it was never finished.
If you have installed the HTW v3.01 a long time ago I still advise to download the latest version and do a reinstall as it uses the latest files.And install the Total Patch on that version.
It could be it makes your BA Campaign playable as you mixed older and newer files.
Still the BA expansion was in early development when RTW came out and all work on it has been stopped.Play it at your own risk, I cannot support BA, the other era's are fine as far as I know.

LZoF