Latest update to Adobe LR CC2015 will not install and can't open LR

[ralittle]

I have an iMac with the latest version of Sierra.  The LR update gets to 100% then lists a failure of "U44M1P7."  I have a fairly recent backup of my photos, but would prefer the safest and best method to correct this issue.  Can someone lend assistance?  TIA

[cmgap]

Found this in an older thread:

"Installation failed" error U44M1P7 with Adobe Creative Cloud or Adobe Creative Suite 6 updates

[ralittle]

Thank you for your response.  I did find that page as well, and I may be being a bit on the timid side, but I don't want to remove something and risk my catalog.  Can someone speak from experience with their solution?

[cmgap]

Are you on the most current version of your Creative Cloud Manager 4.0.1.188 ? Check this by selecting the gear icon > preferences. Update if you are not on the most current version and try installing again.

[ralittle]

Thanks again.  I just checked to make sure that I had the latest version of Cloud Manager, and indeed I do. 

[cmgap · Accepted solution]

The suggestions outlined in the article by Adobe are safe. If you don't want to do this on your own you can reach support via chat or a call.

[ralittle]

Thanks again, but unfortunately I appear to be at a stop until tomorrow when I can reach support.  I renamed the folder and removed LR, but it will not reinstall. 

[ralittle]

Before I resigned myself to wait until tomorrow, I decided to take a look at installing Creative Cloud Manager - I couldn't uninstall LR as it wasn't available.  Luckily, I successfully uninstalled CCM, which allowed me to download LR and now everything is functioning as it should.  Thanks for the help. 

[cmgap]

Great job! I just had to do this myself last week. Glad you were able to work thought it.

[ralittle]

Thanks again for your responses.  I'm still not sure what caused the problem, although the update somehow corrupted CCM.  I was somewhere in the process when I was about to delete CCM when I was prompted to try to fix it.  It worked, and now I can get back to my regularly scheduled programming.