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Unable to Open LRC 12

New Here ,
Oct 25, 2022 Oct 25, 2022

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Hello,

LRC 12 is installed on my iMac Retina 5K, 27-inch, 2017.

  • 3.4 GHz Quad-Core Intel Core i5
  • Radeon Pro 570 4 GB
  • 16 GB 2400 MHz DDR4

LRC functioned as expected up until about two weeks ago. Now, it will not open. It gets to the splash screen and closes.

I tried upgrading to Ventura, but that did not solve the problem.

I have also tried:

  • Resetting preferences by holding Shift+Option at startup
  • Uninstalling and reinstalling from Creative Cloud multiple times (with restarts between each step)
  • Reverting to previous versions (I tried 5-6 different versions)
  • Checking for any components left behind after uninstall (none were left behind)
  • Ensuring that LRC has the necessary permissions on macOS (Accessibility & Full Disk Access)

Anything else I can try?

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Community Expert ,
Oct 25, 2022 Oct 25, 2022

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The first thing that you should try is to switch off the GPU support from the Lightroom preferences and check if that helps to fix the issue.

Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom.

https://helpx.adobe.com/lightroom-classic/kb/lightroom-gpu-faq.html#troubleshooting

https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html

 

If Lightroom doesn't start correctly the please see "Solution 2" in the document behind the second link.

Troubleshoot GPU issues | Lightroom Classic (adobe.com)

 

Another step is to try to reset the Lightroom preferences.

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/

It's recommended to backup your preferences before you reset the preferences to the default settings:

https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html

 

Do you get an error message?

If yes, please post the message word-by-word.

 

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New Here ,
Oct 25, 2022 Oct 25, 2022

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Hi, Matt.

 

Thank you for your response.

 

1.) Your first suggestion to switch off the GPU support from Lightroom preferences won't work because I cannot open LRC to reach the Preferences.

 

2.) I tried Solution 2, but the line "useAutoBahn - true" does not exist in the .plist file. I have copied the full text of the .plist file below.

 

3.) I have reset the Lightroom preferences previously and it did not solve the problem.

 

Any further thoughts on Solution 2 based on the .plist file text below?

 

Thank you!

======com.adobe.LightroomClassicCC7.plist=====

bplist00fl

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Community Expert ,
Oct 25, 2022 Oct 25, 2022

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quote

...

2.) I tried Solution 2, but the line "useAutoBahn - true" does not exist in the .plist file. I have copied the full text of the .plist file below.

...

 

By @Katherine239436555ptm

 

If the line "useAutoBahn = true" doesn't exists in your preference, please add 

"useAutoBahn = false" 

and check again.

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New Here ,
Nov 03, 2022 Nov 03, 2022

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Hi, Matt.

 

Thanks again for your help. Unfortunately, I don't know where to add that line in the .plist file. I had my IT guy take a look today, and he didn't know where to add that line either. Can you give me some guidance on where "useAutoBahn = false" should be inserted in the .plist file? I've attached .docx version of the .plist file in case that's helpful.

 

Thank you for your continued assistance.

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New Here ,
Oct 25, 2022 Oct 25, 2022

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This is the error I receive when I try to reset the preferences:

 

{"app_name":"Adobe Lightroom Classic","timestamp":"2022-10-25 13:50:43.00 -0400","app_version":"","slice_uuid":"ada9a6a6-4de6-318a-871b-2d7ecfb6526a","build_version":"12.0","platform":1,"bundleID":"com.adobe.LightroomClassicCC7","share_with_app_devs":0,"is_first_party":0,"bug_type":"309","os_version":"macOS 13.0 (22A380)","roots_installed":0,"name":"Adobe Lightroom Classic","incident_id":"DDB0A215-0D26-4DB6-A618-09D55F71904D"}
{

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New Here ,
Oct 25, 2022 Oct 25, 2022

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I'm attaching a file that shows the error I receive when I select "Open Normally" instead of "Reset Preferences."

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