Lightroom 4: After system crash I get Unknown Error message when opening

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  • Updated 10 months ago
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My macbook Pro crashed and I had to restart in recovery mode and install my latest Time Machine Backup. The lastest Import had not been backed up yet and was open in the back ground. Now when I try to open LR4 it says It can not open because of unknown error.
I dont assume I can get back my latest import since it hasn't been backed up. How can I open LR again?
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Elke Cunningham

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Posted 10 months ago

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Sounds like the installation is damaged. I would try reinstalling Lightroom 4
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Elke Cunningham

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Thank you Jeffrey, I will try that. I do not know where to find my product key so I'm reluctant to uninstall LR. 
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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You should be able to find your serial here: /Users/<your user name>/Library/Application Support/Adobe/Lightroom/Lightroom 4.0 Registration