Can't use Control+Mouse Button?

[Cattleya-2621 (Cattleya)]

Have you tried using the terminal fix?

Switched to Mac, gaming mouse not working

If the mouse is a Razer Naga Epic/Chroma with the buttons on the side. I have seen this issue just about every time I update OS X or get a new Mac. The solution I have used repeatedly is to open up terminal and type in the following: defaults write com.blizzard.worldofwarcraft disable-expose-fix -bool YES This fix has been around for a number of years, but always seems to get overlooked… Good luck