Premature end of script headers

[dektek11]

I'm installing a url shortening cgi script on my website. When I run the script (click button to shorten url) I get an Error 500 page:

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@... and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

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I looked at my error logs and I have this:

Premature end of script headers: /home/.../public_html/b.pl

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I don't have shell access at this host, so I attempted to install on another of my sites at a different host with shell access. I got the same results, but I ran the script from the terminal and got this:

;BI connect('database=dbname
@localhost' (Using password: YES) at ./b.pl line 24mz
Can't call method "prepare" on an undefined value at ./b.pl line 30.

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From b.pl (line numbers not included):

29) # Add the new URL
30) my $sth = $dbh->prepare("INSERT INTO $conf{'mysql_table'} VALUES('',?,'')");
31) $sth->execute($url);

[dektek11]

OK, I fixed it somehow. For some reason, it wasn't reading the db setup:
my $dbh = DBI->connect("DBI:mysql:database=$conf{'mysql_db'}; host=$conf{'mysql_host'}", $conf{'mysql_user'}, $conf{'mysql_pass'});

...and was having trouble connecting to the database to write/read the info. I actually just took the config from my PERL info on my db page and hardcoded it into the .pl files instead of having it read from the config. It works, but if anyone sees the problem in the code above or if there's a prob coding it in the .pl files, let me know. I'm still pretty new at this and am unsure as to what to do.