I have a Lightroom issue that's been kicking my butt for weeks, hoping someone can help... While in "Develop" module, If I try to crop the screen goes gray. Then when I get out of the Crop mode, the picture comes back, but now if I click on a different picture in the filmstrip, the original picture is stuck there no matter what other picture I want to develop. I've uninstalled and reinstalled three different versions and tried creating a new catalog with only a few pictures, still does it. Any suggestions??? Thank you!!!