I have a strange situation at an install which has be struggling to work out the fix. After a recent Minder failure I have installed a PACA unit to look after logic and scenes/schedules etc. (Currently running PICED on an always on PC to wok out all bugs etc before I download to the PACA) I have most things sorted however one is proving to be difficult to fix. I have a Bus coupler connected to the house alarm so when the house security is armed it triggers a scene to turn off all lights within the house. The Bus coupler is in the trigger control application group which when set to 255 activates a scene to turn off multiple lights etc. It is connected to a dry contact in the alarm so when alarm is armed, contact is closed and when alarm disarmed the contact is open. The problem is that for some reason a hallway occupancy sensor on the lighting group changes the state of the bus coupler. eg when alarm is disarmed the LED on the bus coupler goes off, but when the occupancy sensor detects movement the LED goes back on. This means for the next cycle of alarm on/off the trigger group does not work. I have ran the diagnostic utility and the only thing out of the ordinary I get is a ctrl: Group 0 Scene Indicator Kill when the occupancy sensor detects movement. Any suggestions on how to fix this? Cheers Jason.