This may be the answer, I googled and came up with this
Posted on Thursday, May 10, 2007 - 09:30 am: **
Scott
How do you preprocess your camera jpgs before opening in PWP ?
Normally no profiles are embedded in camera jpgs, only a marker in the EXIF data is set, and the filemane is different (_dsf####.jpg for AdobeRGB instead of dscf####.jpg for SRGB at my Fuji, for example).
Do you use a Nikon software for downloading your pictures that may embedd the Nikon profile ?
I download my pictures with a cardreader with no special software and embedd the approriate profile (sRGB or AdobeRGB) with InProfile to the JPEGs, so i have the correct profile embedded in every file.
Dieter