I just upgraded to Lightroom 5.7.1 and get the message in the title.
I am running OS X 10.10.1.
None of the following helped.
Deleting and restalling the application.
Deleting the preference file $HOME/Library/Preferences/com.adobe.Lightroom5.plist
I have an old download of 5.7.4 that I could put back, but I am concerned that if I end up going backwards in versions it might damage my catalog.
Is there some way I can determine which version of Lightroom wrote a catalog?
Earlier versions of Lightroom 5 use the exact same catalog structure, there's no harm in going to an earlier version of Lightroom 5.
Is that the exact word-for-word error message?
Thanks. I have reverted to 5.4 and all looks well.
The error message is word for word, I did a copy paste into the subject line.
There was some more generic stuff after than about reporting the problem to apple, no more details specific to the crash.