I am not an IML user but ask that given the error below, does running the example file out of the package look like the polygon package install gives a folder under Packages with name polygon but the package itself expects the name is pol?

WARNING: Physical file does not exist, C:\Users\hans\OneDrive\Documents\My SAS Files\My SAS Files\IML\Packages\pol\source\PolyDrawImpl.iml.
ERROR: Cannot open %INCLUDE file C:\Users\hans\OneDrive\Documents\My SAS Files\My SAS Files\IML\Packages\pol/source/PolyDrawImpl.iml.

When polygon and identical pol folders both exist under Packages, no errors.