Hi Dave,
I'm sorry that error message isn't clearer. It should be.
You can't edit the LNAB because you're not on the Trusted List. You don't need to be on the TL to edit Open profiles, with three exceptions: changing the Privacy Level, merging, and changing the LNAB (which is actually a merge, since our IDs are tied to LNABs; a new ID is created and the existing profile is merged into it).
Chris