AW: [otrs] [V 2.1.2] Can't use an undefined value as an ARRAY reference

Hello, I have same problem with an new installation (with rpm and tar.gz). When I first log with root@localhost I receive this message too : Can't use an undefined value as an ARRAY reference at ../..//Kernel/System/Config.pm line 141 I made a DB uptdate but same result as Serge. Otrs release 2.1.3 Where could we search ? Perl problem ? Webserver ? Database ? Regards Richard