BBEdit - The authenticated save for this file failed (application error code: 20004)

I'm trying to edit my hosts file with BBEdit 10. When I begin, it tells me to unlock the file with this message: > **Are you sure you want to unlock "hosts"?** > > You aren't a member of the group "wheel". I go ahead and unlock the file but I'm not able to save it. When I try to I get this error: > The authenticated save for this file failed (application error code: 20004) I can edit and save the file with TextEdit or Textmate, so I'm guessing that I *do* have the proper permissions. Why can't I save the file with BBEdit? Is it because I bought the App Store version instead of the direct download?