Hi all, I've just upgraded our OTRS install from 2.3 to 2.4.5. I'm using the otrs4win installer. I followed the upgrade guide at http://faq.otrs.org/otrs/public.pl?Action=PublicFAQ&ItemID=351 and everything seemed fine up until I try to login to the upgraded system which doesn't seem to be working. If I enter incorrect login details then the system responds with the appropriate message. If I enter correct details the system just hangs. If I look in the OTRS log file then I see the following line: "[Fri Dec 4 17:31:57 2009][Notice][Kernel::System::Auth::DB::Auth] User: jwilson authentication ok (REMOTE_ADDR: 10.11.17.145).". In the Apache error log there are a couple of errors but nothing helpful for me: " Use of uninitialized value $_ in -d at C:/OTRS/StrawberryPerl/perl/lib/CGI.pm line 4083., referer: http://otrs/otrs/index.pl" "Premature end of script headers: index.pl" Both of these lines appear several times. I've done the data import steps in the upgrade guide and I can see my users in the users table in the DB and the login does seem to be successful, it's just trying to load the next page that's causing the problem. The only thing I can think of is that the system is redirecting to the wrong page after login. This might be off the mark but we used to access the old 2.3 system through http://otrs but the new system is only accessible through http://otrs/otrs/. OTRS is the server name. Any suggestions to get this working again would be most gratefully received! James