Hi Paul and everybody
Being of a certain vintage, I am very reluctant to start messing around with registry files in Windows. My nightmare is that I will change something that I can't fix! I too have a problem with Lightroom - it won't recognise CS3. When I attempt to export a Lightroom file into PS, it just copies the file within then LR filmstrip itself - Photoshop doesn't open. When I go to the External Editor and instruct it to recognise CS3 as the Alternative editor that doesn't work either. In the toolbar, the dropdown menu gives the option Open Photoshop exe, but it doesn't give the CS3 version. Clicking on photoshop exe. doesn.t work. As CS3 is the only PS on the machine, I thought LR would automatically find and open it, but it doesn't go anywhere! Surely there must be something simple I'm missing. Now I've returned to Bridge and do all my work there. Ideally, I would like to do most of my adjustments in Lightroom, go quickly into CS3 for specific jobs, and then go back into LR again as recommended by Michael and Jeff Schewe in their DVD tutorial. Surely no user of CS3 should have to go into registry files to fix something that shouldn't be happening in the first place. Wouldn't it be great if Adobe put out a download fix for this!