When the LR4 beta came out, I downloaded it, having previously bought LR3. As soon as LR4 was available to buy, I bought the upgrade package from Adobe.com. But for the last 2 months, it is constantly asking me for the serial number every time I re-open the program. I have LR4.1 also installed on my older 2009 MacBookPro, and there is no serial issues there, but this is everytime on my 2011 iMac. I contacted Adobe and it was suggested to do two things:-
1 - Locate the cache.db file and rename it (such as cache.old.db or cache.db.ol) and then retry LR4. This didnt work.
2 - Create a new user with full administration priviledges, then uninstall and reintsall LR4. This didnt work either.
I am now at my wits end. I could of course leave the program open constantly, but the problem is that I always want to ensure I am competely backed up each time I walk away from the program, and this current problem doesnt really help the situation.
For what its worth, since I re-installed it, I now have to complete registration EVERY time or else the program will fail to open. I merely dragged the Application to the trash bin upon uninstall, so perhaps its leaving files on the machine that the new install is pointing to?
The one thing I have noticed is that the serial input screen also says I have 23 days remaining on the trial(???) - and if I click on this option the program opens immediately.
Thanking you guys in advance.