Everything seems to go fine until I build the package. All I get with
this are a series of messages in the task list which are "The install
dialog ??? is invalid" where ??? is one of each type of dialog shown
in the User Interface window and the program finishes up with
"Solution update failed".

Can anyone give me some idea as to what I may be doing wrong, or that
I may have omitted?

Thanks in anticipation,