[King Kovifor]

I had a bright idea about this, but it doesn't seem to be falling through for me. I thought that since it is giving you fetch_template errors, that there might be a hook in there. But not. I would think that it is being added somewhere in your code if it is being included.

Have you checked the one file that you aren't supposed to overwrite? The config.php for any rouge include()'s or require()'s? If you were indeed hacked and someone was trying to include something, that might be a viable place to store it.