I´d a lot of troubles using the Wizard Setup. Now instead I use InstallMaster it´s a very flexible and powerfull tool, that allows you to encript your files, auto write the win registry and a lot more.
It could be a good option to try.
By two common phrases in his vocabulary, we know Hercule Poirot was a great Developer: his use of "the little grey cells" and "order and method".