Definitely sure that the files were installed correctly and BWCache.ini was removed? It works fine on my side now, and I have regular Ballistic installed as well.
If you don't see Ordnance in the weapon list in Loadout options, it's not the latest version.
If you're using the mutators, you want BallisticPro loadout; if you're using the gametypes, the ones prefixed with BallisticPro.