MP 1.2.3.0 - Changing channels does not work (sometimes)

You are using EVR renderer on Win XP - this isn't really a supported configuration.

For XP, use VMR9 renderer.

For Vista and Win 7, use EVR renderer.

(Basically, since MP 1.2.2 the video part of the filter graph is rebuilt if the video frame size/resolution changes on a channel change - in your logs this is happening correctly, but the video rendering isn't restarting afterwards for some reason).

Tony