I found what causes this problem to occur and thought I would document it here. I sometimes turn the monitors off at night but always leave the system running. Last night a windows auto update caused a reboot and the left monitor became the primary one and the right monitor the secondary. I noticed this when I turned the monitors back on and I assume this is because the system could not interrogate the pair as they were off and selected the default of left to right after the auto reboot. I brought up your gadget and dismissed it and then restarted the system. The reboot put the monitors back with right to left which is what I use and the gadget worked correctly. I suspect that if I had not brought up the gadget when the monitors were reversed the gadget woudl have been stuck in an off-screen position after the second reboot.