[otrs] empty otrs tickets

Hello, we are running OTRS 3.1.1 and for some insane reason we are getting empty tickets in our system. When I click on the empty ticket I get the follow error message: No TicketID is given! |Backend ERROR: OTRS-CGI-10 Perl: 5.10.1 OS: linux Time: Thu May 10 12:09:49 2012 Message: No TicketID is given! Traceback (26850): Module: Kernel::Output::HTML::Layout::Error (v1.380) Line: 1146 Module: Kernel::Output::HTML::Layout::ErrorScreen (v1.380) Line: 1129 Module: Kernel::Modules::AgentTicketZoom::Run (v1.176) Line: 99 Module: Kernel::System::Web::InterfaceAgent::Run (v1.64) Line: 868 Module: /server/otrs/current/bin/cgi-bin/index.pl (v1.90) Line: 46 | Can anyone help me out here ? kind regards, - Pascal den Bekker