Hi,
exactly the same problem with the mouse here.
I tryed it with reinstalling, another mouse, other driver and so on.I got an answer from support:"... Our developers are aware of the issue and we will release a fix as soon as we can manage. I am sorry for the inconvenience that this may cause you and can only ask for your understanding...."I changes the mouse setting in win 7 and changed the mouse buttons. So i can play. But playing with changed mouse buttons is confusing.