I've just got my new PHD7

(which is great btw) and an iScan HD.
I was under the impression that the iScan would get rid of the chroma problem with the Sky+ box. It shows as the red component of the picture displaced towards the bottom right.
I'm using an output of 720p/60 (but it doesn't actaully make any difference what output format I use) connected to a components on the Panny.
The Chroma Filter (CUE) was set to "Auto" already but setting it to "On" (or "Off") still doesn't make any difference.
I've only changed the brightness on the Panny (-7) so far but tweaking other settings didn't make any difference to the displacement.
Also, tweaking various parameters on the picture settings on the iScan didn't make any difference to the displacement.
Have I done something wrong or can't the iScan get rid of the problem?
Thanks for any advice...
Mark