How big is your catalog? There are known issues with the ZIP files with catalogs over 4 GB in size.
Ah that may explain it for some, but my catalog is 1.5gb so not over 4gb. The catalog has over 50K images. Are they working on a fix for these sorts of catalogs or am I going to have to split the catalog up into smaller parcels?
Also does it explain why the program keeps crashing in the Develop mode?
Sounds like you have a long way to go before you get to the 4 GB problem. 50K images is not that large of a catalog.
Manual backups can get you by until you get a resolution.
Report your backup problem over here and see if the Adobe engineers can help you out:
For your Develop module crashes, try turning off the GPU acceleration and see if that helps: Preferences dialog, Performance tab.
Thanks for the advice. I ran Disk Utility and repaired disk permissions then relaunched LR CC and quit it to give me the back up option, I deselected the test integrity and optimize catalog options and it backed up and compressed the catalog. So success of sorts. I then relaunched LR CC and quit again this time leaving the test integrity and optimize catalog options selected and I got the usual error message. What light does that shed on the issue I wonder?
Meanwhile I have disabled GPU as my graphics card is listed as unsupported on the Adobe site and so far that seems to be working.