I am running a Windows 7 64bit OS. All too Frequently when I go to PS and make an adjustment to an image and save it, the return to LR is unsuccessful. The program gives no hint as to why it has crashed. I don't think it's a question of inadequate memory. I have 16 gigs of RAM. Can someone assist me in getting to the root cause? My guess is that some PS adjustments make an image incompatible to the LR app. I am getting tired of reinstalling/repairing LR. I have not seen anything in the Help files with respect to this issue.