Virtual Devices on Simulator does not work

ive read through the forums for any issues related to simulator but i cant seem to solve my problem.

virtual devices on the simulator does not work, the device fails to toggle. If the device is assigned to a physical device then i have no problems. this is very frustrating, i just want to test my smartapps with virtual devices!

community, please help. thanks in advance

just found another post with the same problem. sorry for the duplicate.

other post: Simulator virtual devices not working