Thanks for fixing the link...
I tried to follow all of the instructions here, but I seem to be going wrong somewhere.
So far I have:
1. Used Visual Style Builder to create a simple style. To test, just a new background color for RadTreeView.
2. Saved it as a tssp file
3. Added the TSSP file to the Resources of my application (VB.net and VS2017)
4. added the command to load the package resource..ThemeResolutionService.LoadPackageResource("StyleTester.MX2.tssp")
5. Run the app: but no changes to my control.
What have I missed?