LRC 13.3 Nil error happing when trying to create virtual copies

[rmcgonigle]

After updating today to 13.3 I keep getting the error below when trying to create virtual copies.

"""  ?:0: attempt to index a nil value '''''

Any idea what is going on?  Also when I updated I had to update my catalog.  Since then I have done a bunch of adding photos and editing.  If I try and revert to the previous version of LRC, will it recognize the catalog?

[Rob_Cullen]

I have no answer for the "nil value" error message.  If I create a VC from a 'Missing' image, a blank grey VC is created, no error message.

Calatogs are not backwards compatible. A v13 catalog will not open in LrC v12.  (now even a v13.3 catalog will not open in 13.2!)

For a previous version of LrC you will need to open a backup catalog compatible with the LrC version.