It's a long shot, but I was noticing stuff like this when I moved the forums from their setup URL to the operating URL in the CP because of...stuff. Anyway, I'm hoping that moving the forums to zelaron.com/forum may reset some things and make the errors go away. Of course, it very well may not, in which case I will need to see such an error before I can really take any action to correct it. I left a redirect so old links will still work.