Use of Unconstructed Message error

[rds80]

I'm following this tutorial from MSDN: http://msdn.microsoft.com/en-us/library/aa559215(v=BTS.70).aspx
and I get the error of Use of Uncosntructured Message.

I read a post that said I would have to insert Construct Message
before the Send Message, but that didn't work.

Any ideas?

[JTR]

I'm guessing that one of the send ports is configured to send a
message that has not been constructed.

Look at the else branch send shape make sure the message is the same
as the one you received.
Look at the decide branch and make sure it's one you have constructed
in the transform.

Jules