Ok I ran the package on a clean machine.
It installed Creative Cloud taking about fifteen minutes.
When I start Creative Cloud and log in, the heading says "you have not installed any applications yet"
If I choose one and click on "Install" or "Try" it seems to start a download - it does not pull the source from my package.
I have the pdapp.log file but don't see where to attach it here. Should I paste in the whole contents? (it's 500Kb...)