I have problems with my Logitech G5 gamming mouse. In the demo there wasn't any.
The forward button (nr.5, I think) and the DPI changer buttons (+ and -) are not woking correctly.
I can't assign the forward button to anything and when I press it in the game or in the menu, the DPI goes to minimum. I must quit the game for the problem to disappear. The DPI buttons doesn't work.
Please help. The demo was better. I use Logitech SetPoint software, Win 7 64bit. The buttons have the default assignements, from SetPoint.

if there was no problems in the demo and there are now. its the game.

does the G5 use a driver? if it does try updating it.

HI, I also have the G5 and my buttons work fine

I would try opening the setpoint settings tool
and hit restore defaults

if that doesnt help
let me know.
ill upload images
of my settings