OK, mod must not be working correctly b/c I am not seeing a menu pop-up w/ these options. Strange, I didn't get any errors when installing of building my bash patch.
Did you mount your horse before trying the spell? Also, do you have the latest version (released a few weeks ago)? That version also makes your horse glow for a moment so that you know which horse is being targeted by the spell...
PS: Building a bashed patch doe not list if you are missing install files. It just indicates missing masters. So that is not the way to tell if you have installed a mod correctly. On the other hand, the BAIN "missing" tab will tell you what you are missing, if you use BAIN.