Strange colouring in iMessages in Beta 2 - cannot read messages

[originalmagneto]

Does anyone of you have this problem? When I log out and try to log in as guest, the problem is gone...

 

[WorkerDrone]

Yep! I get that, along with a lot of noise. Not a pure green screen like that, but green blocks, with some message text underneath it in places. Totally unusable. I haven't tried with the guest account yet.

 

[12CoreMP]

At least it is running. If I open messages it just crashes.