Hmmm, it might be that the setting is only for forcing Wizard to appear and not preventing it from not appearing.
I think you need to find the root cause and not trying to solve the symptom. As I have said, the reason why Wizard keep asking when you start is because proggy doesn't know you've done it. The data that indicate that is not saved. Access control problem maybe?
Update: Ok, try this in sys.txt
Spoiler: .
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