[otrs] email do not show up in the otrs system

hi all, I was very happy to find this great ticket request system. I installed the RPM for SuSE linux 7.3 (otrs-7.3-0.5-BETA7.i386.rpm) with YAST. After having installed a few missing perl mods the index.pl turned out to work fine. But when sending mails to the system they don´t show up in the otrs system, although I can see the mails in opt/OpenTRS/var/spool. when I looked at the error log of the httpd it says the following: index.pl: Use of uninitialized value in string ne at /opt/OpenTRS/bin/cgi-bin/../../Kernel/Output/HTML/Generic.pm line 252, <TEMPLATEIN> line 42. please help bert preiss ps. the generic.pm is attached