Unknown path error

[emailapphost]

I keep getting this unknown path error message when I click "New Thread".
What is wrong with my setup?
(I just installed the YouTube links product, is that the cause of the error?)



Warning: Unknown([path]/includes/ame_bbcode.php): failed to open stream: No such file or directory in [path]/newthread.php(301) : eval()'d code on line 1

Fatal error: (null)() [function.require]: Failed opening required '/home/forumsiter/public_html/includes/ame_bbcode.php' (include_path='.:/usr/php4/lib/php:/usr/local/php4/lib/php') in /home/forumsiter/public_html/newthread.php(301) : eval()'d code on line 1

--------------- Added [DATE]1233302487[/DATE] at [TIME]1233302487[/TIME] ---------------

I now disabled the AME - The Automatic Media Embeder and the site works again.

I guess I have to wait a bit before I go about doing such fancy stuff as installing products.