LR2.1 Edit in PS CS4 yields lighter image in PS

[budjames]

I notice a problem since upgrading to PS CS4 from PS CS3, that when I select Edit in PS CS4 from within LR 2.1, the image that opens in PS is noticeably lighter by about one stop. I get the same result if I edit as smart object or as a TIF. If I make no changes within PS but just save the TIF file and then go back to LR, the new TIF saved from within PS and the original CR2 (or DNG) file appear to be at the same exposure when viewed inside LR2.1.

I've checked all of my LR and PS settings and preferences and there is not additional processing that is being done when I edit in PS. It's really strange.

My monitor, an Eizo ColorEdge CE240W, is properly calibrated.

Any suggestions?

Thanks.
Bud James
North Wales, PA

[budjames]

I tried reinstalling both CS4 and LR (deleted the preferences too) and I still have the same problem that PS edits from LR appear lighter in PS without making any adjustments.

I have the same software set up installed on my new MacBookPro 15" and I do not have the problem there.

The problem persists even after upgradeing LR to 2.2, the most current version.

Help???

Bud James