Now where have I seen that build number before
My tests with that Coreplayer show about a 20% benchmark gain on TCPMP Recomp 3 on converted DVDs at 640x360, 500mb (~500kbps I think). Playback is watchable with the occasional skip on TCPMP and smooth through with Coreplayer. Plays most other things I throw at it, Xvid and Divx encoded.
Can you PM me details about the file you are having problems with? I'd like to give it a try.