Due to various issues people have with error logs, you shoud really debug from the commandline, especially for compile time errors.

You should also familiarize yourself with CGI::Carp (great for run time errors). I'm quite fond of keeping my own log, something resembling

BEGIN {
    use CGI::Carp qw( fatalsToBrowser );
    CGI::Carp::carpout(\*LOGGY)
        if open(LOGGY, '>>'.__FILE__.'.err.log');
}
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MJD says you can't just make shit up and expect the computer to know what you mean, retardo! ** The Third rule of perl club is a statement of fact: pod is sexy.