Shoutbox

I've been using Messenger Plus! Live for quite some time now, but recently WLM 9 beta 2 got released.
I searched on the website of msgplus and it said it was 9.0 compatible. So I downloaded and installed WLM9 but to my surprise plus didn't work at all!
I reinstalled WLM8.5 but now all the Msgplus related windows get funny colours!

Obviously I tried reinstalling and it worked for a minute but then it got all funky again.

Here's a picture:


I use Windows Vista Ultimate SP1 64-bit. My computer is just 2 weeks old and I have never experienced any similar graphic bugs (except this one).

I hope someone can help!