Crashes on Ability Use

Hey everyone,
Wanted to give a brief update to let you all know that we're well aware of class abilities and spell rotations causing critical error crashes. The problem has been identified and a fix should be on it's way to you all in the next few hours. Thanks Alpha friends for all of the reports!

Good news everyone!
We just deployed a binary hotfix to resolve the crashes. Your Battle.net app should pick up the change as soon as you close Legion. As always, thanks for your patience!