In addition to the fact that there is now no difference between an update or an install (you no longer lose any settings)
Wouldn't it be an idea to save your settings to a file. So not only to the app, but also as: Safe to a file. This is for those times when you need to install VarAC on another/new PC, or just on a 2nd PC/Notebook. I think it would be useful to have the complete setup in a backup as well.