Opening 2nd wow problem (WOTLK)

Hi,

It seems that if I try to open a second wow game, then I won't be able to ALT-TAB to it. The sound will play and I can hear the login button when I press enter, but the screen is completely black.

All I tried for now was to delete the Cache folder, but that didn't work.

Any suggestions on what I should do?

Thanks,

Go to settings and change it to Full Screen Windowed (or regular Windowed, which is what I am doing)..

Hmm... it works.

But still, it's pretty weird that it doesn't work without this setting. Something's not right.
Also, alt tabbing is so much smoother now.

Thanks for the tip.

it might be because of some windows stuff, as i also have troubles playing league while wow is opened...

Let's hope this setting does not affect the video quality.