video codec

[Alexokrat]

I had this problem once too in Vanilla, codec installing didn't helped me because it was a corrupt Windows installation, could this be the case?

[Zarax]

Do NOT install codec packs! They can mess up with your OS in ways you don't want to know, I spent years try to educate people in that.
IIRC RTW video format is WMV so just update your WMP.

If that doesn't work try this: http://members.iinet.net.au/~malith/...erpack2005.zip

I developed it back then and it's 100% safe