[dsc] Premature end of script headers: dsc-grapher.pl,

[StefanS]

Hi
First thanks for this good program.
If i start  dsc-grapher.pl (select Server) in the browser, i get ³Premature
end of script headers².

Here the error log file from Apache.

[Tue Aug 11 16:09:35 2009] [error] [client 192.168.1.69] Use of
uninitialized value in join or string at
/usr/lib/perl5/site_perl/5.8.8/DSC/ploticus.pm line 424., referer:
http://it.feltengmbh.de/cgi-bin/dsc-grapher.pl?window=86400&plot=third_ld_vs
_rcode_accum
[Tue Aug 11 16:09:35 2009] [error] [client 192.168.1.69] Can't exec
"-stdin": No such file or directory at
/usr/lib/perl5/site_perl/5.8.8/DSC/ploticus.pm line 429., referer:
http://it.feltengmbh.de/cgi-bin/dsc-grapher.pl?window=86400&plot=third_ld_vs
_rcode_accum
[Tue Aug 11 16:09:35 2009] [error] [client 192.168.1.69]  -stdin -csmap
-mapfile /usr/local/dsc/cache/6dd09ecbb37626c277823c9f4363b36e.map.new -png
-pagesize 12,12 -o 
/usr/local/dsc/cache/6dd09ecbb37626c277823c9f4363b36e.png.new at
/usr/lib/perl5/site_perl/5.8.8/DSC/ploticus.pm line 429., referer:
http://it.feltengmbh.de/cgi-bin/dsc-grapher.pl?window=86400&plot=third_ld_vs
_rcode_accum
[Tue Aug 11 16:09:35 2009] [error] [client 192.168.1.69] Premature end of
script headers: dsc-grapher.pl, referer:
http://it.feltengmbh.de/cgi-bin/dsc-grapher.pl?window=86400&plot=third_ld_vs
_rcode_accum

Possibly eien idea?

Thanks for each assistance

Stefan