Try reposting here:
http://social.microsoft.com/Forums/en-US/project2010custprog/threads
I can move it for you if you like.
I know there is a switch you can set on the command, I just don;t know it off the top of my head.
Also, I tend to set the visible property to False until I am certain the Project file passes integrity checks or anything else I want to do before I enlighten the user.
If you feel this post answered the question, please vote for it. I am also available here: http://www.msprojectblog.com