I'm running the standalone on Windows 7 SP1 on my iMac. Tried various different mice? mouses? and still no luck.

The mouse does not work in any menu screen from the lobbys, to gear, to the standard menu. It only moves if i click where I want it.

I did however manage to find my way into a game using the keyboard arrows and the mouse movement is absolutely fine when playing the game, but still does not work in menus