Dear All, just downloaded OTRS 2.2.1 for Fedora Core 4,5,6 RPMhttp://ftp.otrs.org/pub/otrs/RPMS/fedora/4/otrs-2.2.1-01.i386.rpm- 12.7 MB to upgrade from 2.1.7 on CentOS 5.x I made it like rpm -U OTRS 2.2.1.rpmhttp://ftp.otrs.org/pub/otrs/RPMS/fedora/4/otrs-2.2.1-01.i386.rpm before made backup of /opt/otrs/*.* and mysql database. Made ... [root@XXXX ~]# /etc/init.d/otrs start Starting OTRS.. Checking httpd ... done. Checking MySQL ... done. Checking database connect... It looks Ok! done. Enable /opt/otrs/bin/PostMaster.pl ... done. Checking otrs spool dir... done. Creating cronjobs (source /opt/otrs/var/cron/*) ... done. -->> http://XXXX/otrs/index.pl http://xxxx/otrs/index.pl <<-- Final start of OTRS.. done [root@XXXX ~]# All looks fine, but when log-in went to tickets view, got this error: Software error: Can't use an undefined value as a HASH reference at ../..//Kernel/System/Ticket/Article.pm line 1395. For help, please send mail to the webmaster (root@localhost), giving this error message and the time and date of the error. Any ideas how to fix it ? Vbrgs!