i have just realized that the picker sample provided with sdk 2.2.1 is broken.
i worked a lot with it when working with sdk 2.1.5 (and simulating a fr230). and now it cannot be executed in the simulator.
i get the error
[HTML]Manifest Error: The supported device 'ARoundWatch_240by240' was not found in the SDK.[/HTML]
i managed to execute it by commenting out this line from manifest file
<!-- <iq:product id="ARoundWatch_240by240"/>-->but still, it looks broken. f.i. the layout picker is not working properly