I am posting of a problem I have every now and then. I'm not sure if its a pitbull issue or a different add on. When I log in, I click say pitbull character frame and i get the settings info above. I can't heal anyone but myself, even if i choose them on grid, it will heal me. I click fuguild, to say msg someone and instead it invites them to a party. I have usually log in a couple times and hope it goes away. Anyone ever have this problem?
1) Exit WoW completely and delete the Cache folder. Corrupted cached data can cause any number of apparently impossible problems.
2) If that doesn't solve the issue, does it happen when you log in with no addons enabled? If so, I'm not sure there's really anything else we can help you with, and you'll probably need to contact Blizzard tech support. If it doesn't happen with the default UI, you'll need to do the fun dance of tracking down which addon(s) are causing the problem. The fastest way to do this is to enable half of your addons. If the problem doesn't reappear, disable all of those and enable the other half of your addons. Once you've found the problem half, disable half of those and try again, continuing to halve until you're down to a single addon. Once you've found it, delete it, reinstall it from a fresh download, and try deleting its saved variables; if none of those help, post in its thread or download page for further assistance.