I am new to WL, so please forgive my lack of expertise. I got the following compile errors attempting to execute this strategy:
CS0103 the name 'VossPredictor' was not found in the current context
CS0103 the name 'BandPass' was not found in the current context

I suspect this means I don't have a library or package that WL can search and find these named routines?

Welcome to the forum Edward.

Your assumption is correct. As I always note, and this Traders' Tip not being an exception, users should install (or update) the TASCIndicators library to its most-recent version from our website or using the built-in Extension Manager. Its latest version includes the new indicators created by Mr. Ehlers.

Please update the TASCIndicators library for the VossPredictor/BandPass indicators to appear (and the compile errors to disappear). On how to install or update Wealth-Lab extensions, check out this illustrated tutorial and/or the Wealth-Lab User Guide > Extension Manager.

For future reference, please consider checking out the accompanying Traders' Tip text of a Strategy for important notes and prerequisites. It can be found in the Wealth-Lab Wiki and the magazine itself.