I'm getting a null search result as well, so I think it must be a technical issue. Lets try logging out and using a new browser profile or completely clearing the cookies from the browser. Its possible that there can be version differences when the software has 2 parts, one running on your bare metal and another one running on a site. Sometimes things do not update properly. With a site like this, the first thing to try is another browser profile and logging in from scratch.
- I enter a target term (never more than two words, more often just one).
- I enter name of "Posted by".
- I click on "Search" and get nothing, usually because I'm not in the forum that the message I'm looking for is in.
- So, I go to "Advanced Search" and click on "Search Everything" and get nada.
It probably won't fix it, but its the next step.