[otrs] Error Since doing 4.x to 5.01 Upgrade

Since upgrading to 5.0.1 (and now 5.0.2), I've been seeing the following error in the system log: OTRS-otrs.Daemon.pl - Daemon Kernel::System::Daemon::DaemonModules::SchedulerTaskWorker-10 Data->{Params} format is invalid It happens every 10 minutes. Can anyone point me in the right direction to track this down? Thanks, Dan