Yep, but that's exactly what you need to stay sane when faced with people who a) don't want to adopt a solution that I know to work, but b) are incapable or unwilling to make the effort to make their own "preferred" solution work.

I've come to the same place as Marco: I just "admit" I can't help them. Yes, it's a white lie, but not one that keeps me awake at night.