I'm at a loss. I'm sure it's a simple oversight, but when I open LR4, I get a blank screen. Not totally, blank.... I get the main window but no images, no panels, no thumbnails and have to hover over the top to reveal the menu. Nothing shows up until I reveal the menu and hit the Library module, and then it's all back to normal. This is only happening on my MacPro, but not on my MacBook Pro
Any ideas?