User acconts - list account - broken after edit

DataTables warning: table id=userTable - Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1

That happened after creating a second user and editing a second user to resseler permissions.
After that not able to see and edit any user.
Also not able to loging with any user.

Any one got same problem?

if you've pro license you can contact us and send this forum thread link in the ticket