Hi, I hope it's not thread-hacking (but this seems to be finished), I have a follow-up-question. I removed the billing_plugin.inc.php and deleted all invoice-tables. But when a customer wants to edit his data (Home - My Data - Edit) the site just jumps to the top and does nothing. And the link behind edit looks like this: <a href="#" onclick="loadContent('billing/dashboard_client_edit.php');">Edit</a> I also renamed /usr/local/ispconfig/interface/web/billing to billing.old, but it doesn't help. Is there anything left, I need to remove to fix this?