I installed LR4 on my laptop with Windows 8 and it works fine. I then installed it on my desktop using Windows Vista. It opened fine and I used it once. Shut it down and I have not been able to open it since. So, I uninstalled it and re-installed it and the same thing happened. It opened the first time and worked fine, and then would not open again. Any ideas?......Help! Thanks...Mick
Moving this discussion to the Photoshop Lightroom forum. Do you see any specific errors in Event Viewer when you try to open Photoshop Lightroom?
Are you getting any error mesage. If so please indicate.