At times, you may run into conflicts caused by add-ons. These conflicts may prevent you from accessing your control panel to disable the offending add-ons.
To fix this, you can disable add-ons via the library/config.php. Simply add this line of code at the end:
All the addons still show up in ACP along with their options and settings. They're just not showing up on the forum. Except for Attachment Statistics. This shows but since this issue, it's not showing the stats.
Even disabling this addon doesn't remove it's side block.
But why would all addons disable and vanish by themselves.