Sounds like you were on vault view on the right pane. (that is, robot is highlighted on left pane)
Then of course you can create/delete vault, not profile.
If you are on profile view on right pane(that is, you highlight the vault on the left pane) then you can create/delete profile.
What's odd to me is that the other menu selections (storage unit, media) does not behave this way...
:-)
Abe