GRRRRR - I just lost a lengthy blogpost reply because a "you do not own that identity" error was returned from wordpress. I went to my blogsite profile **cut & pasted** my identity from there, and edited my "post as" dropdown (actual lost post was a blog on blogger - but the error message came from YOU). NO DICE. Same deal.
mghcoach4add - pasted from my "username" from my dashboard profile
btw-my url is ADDandSoMuchMore.com (paid for domain upgrade) - but your dropdown box doesn't give me that choice.
Blog url: http://addandsomuchmore.wordpress.com/