When starting arma 3 from steam there are no problems.
When starting the launcher from steam or starting playwithsix (tried reinstalling), my mouse (logitec M-U0007) freezes completely. My comuputer only responds to keybord commands. The programs open without any functionality problems. I either have to reboot or logoff/on to get the mouse working again. Since this happens when starting either playwithsix or the arma 3 launcher, i'm guessing it has something to do with a part of the mod managing programs conflicting with my mouse.
I'm also using a mouse driver from logitec (http://support.logitech.com/software/setpoint), version 6.65.62. {F25699}