Cannot convert PSE 11 catalog to PSE 15
Just bought a new computer so took the opportunity to also upgrade to PSE 15. I copied the My Catalog folder across to the new computer and downloaded PSE 15. Now I am trying to convert the catalog but getting an error "Cannot convert". Message in the error log is "Failed since Original Catalog was open. Close older version of Elements Organizer." I have no older version of the Organizer on this computer, it is brand new. I am running Windows 10. The actual catalog filename appears to be catalog.pse11db. Any help would be appreciated.
