This version of "FMCore" is not compatible message on restart

I get this message when restarting my Mac:


This version of "FMCore" is not compatible with macOS 14 or later and needs to be updated. Contact the app developer for more information.


I don't know what app this refers to or how to contact its developer. Anyone have the answer?

Mac Pro, OS X 10.11

Posted on Feb 1, 2024 12:05 PM

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Posted on Feb 1, 2024 1:23 PM

Thank you. It appears to be a newly incompatible software to recently downloaded macOS 14. Suitcase Fusion is the culprit and Extensis would like to charge me $150/year to get it to work. Maybe, maybe not...

4 replies

Feb 1, 2024 12:11 PM in response to clos

FMCore appears to be some type of third party fonts you downloaded. I did a quick Google of FMCore Mac and found them. I'd recommend that you do the same, the first article I found was:


https://help.extensis.com/hc/en-us/articles/360053057654-Getting-FMCore-error-50335758-when-opening-Connect-Fonts-for-Mac


If that error is what you are getting then follow the advice, if you are getting another error then include that error number when you are Googling FMCore.

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This version of "FMCore" is not compatible message on restart

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