I am using a photoeye to control a motor. When blocked for two seconds it should shut the motor off, when cleared for 1 second it should turn the motor back on. The photoeye indicates its blocked but the conveyor does not stop. I am getting the following message from the system console "time: 1205.277804 exception: FlexScript exception: MODEL:/PE1>variables/localType/blockTrigger". What's going on?