This is very confusing.
to reproduce it, you'll need at least 1 addon with custom handlers
steps to reproduce with RM:
- install resource manager
- create a testresource with "searchhandler test"
- report the resource
- deactivate the addon
- search for "searchhandler test"
but the resource will be shown in the search result and the result link will go to a errorpage "A controller for the route path resources/ was not found."
and the same problems will happen in the reported items queue (i'm sure it will happen in the modqueue too and all the other handlers. e.g. alert)
see also http://xenforo.com/community/threads/users-awaiting-approval.53173/#post-568800