I have good news and bad news:
The good news is, I tried both the things you suggested, and the game installed fine.
The bad news is the pvp and chat bugs are still very much there.
But I've thought of a few things that might be important:
-Whenever I see someone else's chat, it always says [dev] in front of their username. (but I'd assume it's just supposed to be for devs?)
-On the world map, the home city button and attached buttons (alliance, forums, etc.) get in the way of some of the army interface buttons (specifically, the pvp button). No buttons, not just the pvp one, work when they're smushed behind the other buttons (even though they press down as if they've been pressed). So is there some way to minimize the home city button and everything attached to it? It might just solve this problem.
Hope some of this helps.