Having just released the latest version of iTweak, I now realize that I have caused some confusion amongst the new interface.
All of you were used to having to select the options that iTweak should complete, in the separate “Options” panel, looking like this:

After the 1.4.5 update, I removed this window and attached the checkmarks to the main window itself, now clearly separating which text-fields are for what and when they need to be used.

The idea has never changed, you still have to tick the options you want iTweak to complete. Excuse for the problems it might have caused, I will put a note on the tutorials about that.