PackageInstaller sample won't uninstall

I’m attempting to make my first project ‘by the book’, as much as I can, and
one choice is to use the PackageInstaller sample, which installs my scenery as
intended, but won’t uninstall. I have absolutely no experience with Visual
Studio, but it appears that it should be usable as-is, and to a certain point
it is. Does uninstall actually work in the sample? If not, could it be made to

Hello. We’ll have a look at this.