Hello all, We've installed OTRS 2.4.6 on Fedora and works fine, but after a while I added some attachement via the admin menu and assigned it to the default empty answer. But now if I want to delete this attachement, I got the following error: Error: Invalid Challenge Token! Comment: Bug Report: Traceback: ERROR: OTRS-CGI-10 Perl: 5.10.0 OS: linux Time: Thu Feb 4 17:13:22 2010 Message: Invalid Challenge Token! Traceback (14212): Module: Kernel::Output::HTML::Layout::ChallengeTokenCheck (v1.176.2.14) Line: 1328 Module: Kernel::Modules::AdminAttachment::Run (v1.21) Line: 133 Module: Kernel::System::Web::InterfaceAgent::Run (v1.43.2.1) Line: 819 Module: /opt/otrs/bin/cgi-bin/index.pl (v1.88) Line: 48 Any idea, what could be happen, maybe permission problems? Any help is welcome! -- Met vriendelijke groet/kind regards, Dennis Feijen