WOW game freezing while in combat?

Hello! So I'm having some technical issues with my game ever since the newest patch (4.1). I noticed after the patch, I tried loading my add ons and experienced immediate freezing once entering any sort of combat. Casting, being attacked, and my pet all appeared to be causing this issue. Running around in the game does not cause the issue. So I'm uming it has to be an add on causing this. I tried running the game and entering combat without any add ons in the background and it worked just fine. Does anyone know if this is a common problem reported, or have an idea which add on it could be? Here is a list of the ones I am currently using:Atlas Loot, Xperl, Bartender 4, Deadly Boss Mod, Ecastbar, Omen, recount, and titan panel. Thanks!