I recently upgraded to CS4 and have been experiencing the following problem. When I open an image from ACR to PS CS4 it looks absolutely nothing like it did in ACR. If I was to describe it, it would be that the image has an overall red tint when viewed in CS4. If I then save this image as a PSD file, and then open it in PS CS3 it matches the CS4 ACR image. So, what have I got set wrong in PS CS4 (which is still all of the default settings)?