ERROR_BADCONFIG is a reference. The following printError fixes your problem

sub printError
{
   my $errortext = shift;
   my $errorhashref = shift;

   print "$errorhashref->{ 'Type' } Error Detected\n",
         "$errorhashref->{ 'Description' }\n",
         "Error Details: $errortext\n";

   if ( $errorhashref->{ "Fatal" } ) { die "Fatal Error Detected" };
}
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Also, when you are including errors such as "Reference found where even-sized list expected at errors.cgi line 42" it is often useful to mention what line 42 is.