PzC/MC/ACW Windows 7 troubles

[Pippers]

Has anyone had an issue with firing?

I select the unit(s) and then ctrl-right click where I want to fire, and it just selects the enemy hex rather than firing on them. It doesnt happen all the time, its about 50/50. Ill have to reselect the units, then ctrl-click to fire again. I never had this problem with Mius43 demo, but I do have this problem with Moscow 42.

All drivers up to date, etc. Windows 7.

Edit: Actually, this is happening in the demo as well now. Going to try and roll back drivers a few versions.