Ah. That's an entirely different line and Black can deploy his light squared bishop Bg4 with equality. In the previous variation we were discussing the move was 11. Rab1
It's 11Bxf6 being played instead of 11Ra-b1 with entirely the same pawn structure. The karpov example is 11...Ne4 being played instead of 11...a5. In neither case can Houdini or anything else prove white is winning. Most middle game books explain about the carlsbad pawn structure in a conceptual way, using examples other, and including from QGD exchange. Most people reserve detailed move by move varation study for sharp variations like lines of Nadjorf/Dragon, were without concrete knowledge will soon reach a lost position.
I have the Andrew Martin Chessbase DVD too. I'd say the stuff on the QGD Exchange is probably very useful.
What didn't you like about Chessbase player? I used the latest version of Chessbase Reader instead of the player provided but that may mostly be still the same thing. Might be a clue that you may not like the Chessbase interface.
It turns out the drivers on my Windows 8 were out of date and messed up. As soon as I updated/reinstalled the Chessbase player worked just fine.
I'm liking IM Martin's version of the Cambridge Springs quite a bit though I think I'll sneak into it via the Semi-Slav where White gets little to nothing by a center pawn exchange.