FormMail.pl Not Working

[PayMasta]

I'm working on a site for a client and trying to add a FormMail perl script. It's not working...

See form here: http://www.happytailsdogparknh.org/contact.html

• I have the permissions for the cgi-bin and the FormMailFeedback.pl file set to 755
• First line of script is #!/usr/bin/perl
• $mailprog = '/usr/sbin/sendmail -i -t'
• Form is set to POST to http://www.happytailsdogparknh.org/cgi-bin/FormMailFeedback.pl

Here is the FAQ for the script:
http://www.scriptarchive.com/faq/formmail.html

Help!? Why is it not working? I've used this script with other hosts with no problem. I'm sure it's something simple...

Thanks!