fastcgi - mod_fcgid, perl script output going to apache error_log

I'm trying to get an old Perl script running again after installing mod_fcgid. I had to install mod_fcgid for a new client, but it seems to have broken some of my other cgi scripts.

When going to the page, its now a 500 error. I checked the error log, and the output from the script is in the error log... so the script is running but for some reason it still delivers a 500 Internal Server Error to the browser...

HTML headers are the first thing printed... so I'm not really sure why this error is occurring.

The Error Log:

[omitted:html output]
[Wed Dec 08 08:59:18 2010] [warn] (104)Connection reset by peer: mod_fcgid: read data from fastcgi server error.
[Wed Dec 08 08:59:18 2010] [error] [client x.x.x.x] Premature end of script headers: www_protect.cgi, referer: http://www.mywebsite.net/
[Wed Dec 08 08:59:21 2010] [notice] mod_fcgid: process /www/sites/somescript.cgi(6747) exit(communication error), terminated by calling exit(), return code: 0

fcgi.conf:

  AddHandler fcgid-script .fcgi .cgi
  #SocketPath /var/lib/apache2/fcgid/sock
  IPCConnectTimeout 45
  IPCCommTimeout 20
  OutputBufferSize 0
  MaxRequestsPerProcess 500

  IdleTimeout 3600
  ProcessLifeTime 7200
  MaxProcessCount 8
  DefaultMaxClassProcessCount 2


# Sane place to put sockets and shared memory file
SocketPath /var/run/mod_fcgid
SharememPath /var/run/mod_fcgid/fcgid_shm