Upgraded to 2.1, now get error when trying to view an ad

[macsamurai]

the index page appears fine (i've closed the classifieds now until this is fixed), but when clicking through to view any ad, the following error appears:

Fatal error: Call to undefined function: convert_markups() in /home/laurie/public_html/classifieds/showproduct.php on line 242

Also, in the admin controls, when clicking "moderate comments", I receive this error:

Fatal error: Call to undefined function: convert_markups() in /home/laurie/public_html/classifieds/adm-modcom.php on line 75

Obviously the common thread is convert_markups(), but I am not sure how to fix it or what, if anything, to re-upload.

installed: http://www.cubeowner.com/classifieds
(version 2.1 upgrade from 2.0.x)

Guidance on how to fix this would be appreciated. Thank you.

[Michael P]

Did you upload the files in the forums directory? Which integration are you using?

[macsamurai]

I re-uploaded the forums directory and it worked. thanks.