Considering that you are using the correct build for your region I think this may be able to help you; In order to get your HB to run successfully, run the HB launcher, and instead of logging in at once, toggle the wow.exe that opened and login to your character fully way. Once you are online at your character, toggle your HB client that is opened and login (WHEN YOU ARE ONLINE AT WOW). Good luck!
When you're at the loginscreen of World of Warcraft, what version does it say in the bottom left corner?
was a post this morning somewhere saying they ran is as admin under windows 7 compat mode and it worked not much help i know but meh download the eu version aswell, as i think your running the american one http://www.thebuddyforum.com/releases/131699-honorbuddy-v2-5-7857-658-a.html