Thanks!
It looks like your languages/english/faq.php file was not created successfully upon upgrade.
Confirming that I'm able to duplicate your reported bug -- I just now attempted to view the "Forum Help" (FAQ) page on my test server with an upgrade. It does not display for me either. Though, a fresh install works just fine.
The solution is to copy the faq.php file (mentioned above) from your archive, in to the same directory path on your forum install.
example:
ubbthreads-7-6-1.zip/ubbthreads-7-6-1/languages/english/faq.php
to
YOURDOMAIN dot com/ ... /languages/english/faq.php
