Thanks for the help. I've spent hours combing through things trying to find where else I might be using Modules Anywhere that might be causing the issue, but I'm at a loss.
I did fix the {module Toolbar - Search} reference, but I'm still having the issue after looking through all of my menus and modules. I'm pretty sure the only call to modules anywhere that's still active is the Login one that is triggering from the menu toolbar. Even if I turn that module off, I'm still getting the white screen on the search.
And what's weird is sometimes the search works, but most of the time it doesn't.
It is difficult to debug things if your site is just returning blank. It is not clear why that would happen.
Even with debugging on and Error Reporting set to maximum.
Do you have something on the server side preventing errors from showing up (maybe ask the host)?
Do you see anything in your error logs pointing to an error?