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
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