Right click -> "run as administrator"

Vista AND Quake 4? Are you into S&M?

1.4.2 + Q4MAX 0.82 ?

He's not running q4max, thats q4mp (cannot tell the version from the screenie, but its 1.4.something)

The problem is permisions on writing to Program Files, which as a non-admin program q4 doesnt have permission to do under Vista. The solution is to run it as an admin, as I mentioned in #1.

When using Q4Max, running via either MAXBrowse or LaunchQ4Max will automatically prompt for admin permissions.

My comment wasn't point that 1.4.2 + Q4MAX 0.82 are the problem but rather lack of this things :-)

Yea, I got that, but as the problem is the same with 1.4.2 + q4max, thats not the right answer ;)

xp will fix it