So, what changed between when you saw it and when it stopped working? Where other polls added to the site? *Something* changed.
OK, we know that since there is an error, the STANDARD_ERROR template is being called and that is putting in the whole new html page and causing the header error. (So, it's kinda an error causing another error.) We need to find what the original error is.
Have you looked in your apache error_logs?
I have written in some notes that you can put this line in a php page to help spit out errors:
PHP Code:
ini_set("display_errors", 2);
It would need to be set in <php> tags to be included. I've haven't had a need to use that yet, so I don't know exactly what it'll do.
Of course, I just went to test your page again and it is now displaying fine (the copy I made on my site is fine, I mean.). Trying to troubleshoot things like this is fun, fun, fun!