I uninstalled BUG and ran just BULL but the same problem occured. Also I only gotten the BULL features, as i dont believe any of the Files from either Mod overlap, they just compliment each other.
My game copy is a steam copy, I'm not sure what you mean though. As I ran BUG alone fine, so its been able to run Mods through it.
The problem may be the Steam installation. Lymond answered a mod quiery in another area of the forum today. Here is the applicable part of his post:
--------------- begin Lymond quote ------------
One thing though that I know you need to do..having STeam version myself...is switch to the "orginal release" beta of BTS in Steam. Steam jacked with the game a few years ago when Multiplayer was switched over to their system, but this screwed with mods.
Go to BTS in Steam Library > Right click on the game > Properties > Betas tab > from drop down select "original_release_unsupported....." . Steam will redownload the game.
Also note a coupla other things:
1) Always run BTS from the BTS executable (not from Steam library)
2) Set BTS executable to "run as administrator" (right click>Properties>Compatibility> check the box)
3) mods should be installed into something like "Program Files(x86)/Steam/steamapps/common/bts/bts/mods". And yes, there are two bts folders so make sure it is the lower level folder and make sure the install is directed there if the install does not find it automatically (that does happen).
(all this assume windows OS)
--------------- end Lymond quote ------------
If you are not already doing this, then that may be the problem.
If that does not solve things, try this: The way I run BULL is that I have BUG installed in CustomAssets. That way it runs all the time whenever I start up CIV. When I run BULL, BUG is there, no need to merge anything.
If neither of these two things works for you, someone else will probably be along after a while. This forum area is not real active so it may be a couple of days.