hpapache2 can't locate GD module

[Karl Pelz]

Hi,
I've installed perl 5.8. with several additional modules e.g. GD::Chart. When I ran the following script (call metrics.pl) from the command line:
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#!/opt/perl/bin/perl -w
use CGI;
use GD;
my $q = new CGI;
print $q->header( "text/html" );
print $q->title( "Dies ist eine CGI Seite");
foreach (@INC) {
print $q->p, $_ ;
}
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everything is fine.
If I call the same script via hpapache2 using cgi I receive an "Error 500: Premature end of script headers". The logfile from hpapache shows the following error message:
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[Wed Oct 01 13:19:03 2003] [error] [client ....] Premature end of script headers: metrics.pl
[Wed Oct 01 13:19:03 2003] [error] [client ....] Can't locate loadable object for module GD in @INC (@INC contains: /opt/perl/lib/5.8.0/PA-RISC1.1-thread-multi /opt/perl/lib/5.8.0 /opt/perl/lib/site_perl/5.8.0/PA-RISC1.1-thread-multi /opt/perl/lib/site_perl/5.8.0 /opt/perl/lib/site_perl .) at /archive1/docs-edc/cgi/metrics.pl line 3
[Wed Oct 01 13:19:03 2003] [error] [client ....] Compilation failed in require at /archive1/docs-edc/cgi/metrics.pl line 3.
[Wed Oct 01 13:19:03 2003] [error] [client ....] BEGIN failed--compilation aborted at /archive1/docs-edc/cgi/metrics.pl line 3.
__________________
But an ls -la /opt/perl/lib/site_perl/5.8.0/GD show the GD module:
total 128
drwxr-xr-x 4 root root 96 Sep 26 11:25 .
dr-xr-xr-x 32 root sys 1024 Sep 26 11:47 ..
drwxr-xr-x 2 root sys 1024 Sep 26 11:25 Graph
-rwxr-xr-x 1 root sys 45395 Jul 1 05:02 Graph.pm
drwxr-xr-x 2 root sys 96 Sep 26 11:25 Text
-rwxr-xr-x 1 root sys 16996 Jun 19 00:13 Text.pm
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Could someone help?
Thanks in advance.

Karl