2.2.1 > can't assign policy to mediasource usergroup

Hi,

When i'm logged in as sudo (yippie) i'm trying to add a usergroup to a mediasource.
selecting the usergroup goes well also choosing the role.
BUT the dropdown for policy doesn't show anything, therfore i can't save thus can't add the usergroup to ythe media source

bug? or stupidity on my part (could be

Ralph using the brandnew 2.2.1pl traditional

Please, anyone?

Media sources are totaly not workable this way. i can't belive i'm the only one having this problem

rdg