Image creation failed with error "Cannot drop the user SqlClone_LowPriv_vec"

I have just setup the trial version of SQL Clone and the clone and agent account are both sysadmin on the SQL server being used to generate the images from SQL backups.

It started fine but at the end of the creation process it generated the following error:

Cannot drop the user 'SqlClone_LowPriv_vec', because it does not exist or you do not have permission. (SqlException)

Both accounts (SQL Clone and SQL Clone Agent) have the sysadmin role and I can see a new account created called "SqlClone_LowPriv_vec".

Not sure what the issue is.

Thanks