Sharing the problem here instead of XCloner free forum as I haven't received the registration password which supposed to be sent to my email account (over 30 minutes).
Problem: While, trying to initiate a manual backup, I receive an error message as below though shrunk 'Files to process per request' to '50' and 'Compress backup' is set 'no':
There was an error retreiving the JSON data from the server, try again or contact the developers!
Details: error -- undefined
JSON url: index2.php?task=recurse_database&nohtml=1&dbbackup_comp=&dbbackup_drop=