I usually use Capture Nx2 and photoshop, but decided to try Lightroom 2 since I am working on jpegs from point and shot underwater cameras rather than NEF files. I have Windows 7 64 bit, using Lightroom 2.6 64 bit and Photoshop Cs4 64 bit. when I try to edit the jpegs in photoshop using control + , or photo> edit in photoshop nothing happens, all of the edit in options are greyed out. Has anyone else had this problem - I don't seem to be able to find a solution on Adobe's help or in Lightroom 2 by Scott Kelby?