Hi, I posted this one on http://forums.otrs.org but got no answer, so I'm pushing it here again. Since some days we are getting the following error when trying to rebuild the Index (we are using the separate index, as the amount of tickets in the database is huge): otrs@otrs:~> $HOME/bin/RebuildTicketIndex.pl ERROR: OTRS-RebuildTicketIndex-01 Perl: 5.8.8 OS: linux Time: Wed Feb 9 08:45:08 2011 Message: Need Lock or LockID! Traceback (13807): Module: Kernel::System::Lock::LockLookup (v1.29) Line: 179 Module: Kernel::System::Ticket::TicketGet (v1.30.2.6) Line: 1138 Module: Kernel::System::Ticket::IndexAccelerator::StaticDB::TicketLockAcceleratorAdd (v1.11.2.4) Line: 225 Module: Kernel::System::Ticket::IndexAccelerator::StaticDB::TicketAcceleratorRebuild (v1.11.2.4) Line: 422 Module: /opt/otrs/bin/RebuildTicketIndex.pl (v1.18) Line: 58 otrs@otrs:~> What is causing that? How could I get it working again? Thanks for your answers! Greetings Jan Dreyer