First of all thank you for absence of option to write to support for technical question. It is always pleasure for me to pay a subscription fee and realize there is no option to contact support. You made my move to C1 easier.
Back to the problem.
LR 2015.12. Right after update.
When I open LR after restart it tries to open new instances of the same catalog again. Again and again. And just can't stop.
It continues after reinstall.
In addition to that it says that my trial has expired and proposes to buy the software again. Last time activated - 19 juillet 2017
Hi @Alex PetrenkoThank you for writing to us.Its an activation issue in Mac machines.If you have an active subscription & still you are getting trial error on your creative cloud & facing this multiple instance launch issue then,please follow these steps:- Sign out from creative cloudQuit the applicationClose all Adobe apps from activity monitor like:-Adobe desktop services, CC library, core sync, creative cloud.Now download Adobe application manager from this link & installhttp://supportdownloads.adobe.com/thankyou.jsp?ftpID=4774&fileID=4438...
This did not work for me. The lrct file was damaged and could not be restored. However, I found another way to solve this issue. First I uninstalled Lightroom and after that I lauched Ligtroom Classic again. All of a sudden I could open a backupfile. Lost some weeks of work, but I had it working again.