I’d still think that if removing them gets your plugin to load and maybe do something like a console.write(“Hello World”) then you’ve gained some useful information. If that works, then build up from nothing (maybe even an empty plugin) and see if a particular call you need isn’t supported and ping the forum with that.
Since the compiler warning wasn’t enough to trigger “Oh, I’ve seen that; here’s the fix” from anyone then the more focused you can make the question the easier it’ll be for McNeel to help you, or another dev to take your simplified example and say “Oh, I’ve seen that pattern before.”
See my recent example, DrawMeshWires Working, DrawSubDWires Not Working? - Rhino Developer - McNeel Forum
If I’d said “My plugin doesn’t seem to be drawing SubD’s” I probably wouldn’t have gotten much.
Pulling the code out of the plugin to make the simplest 3DM and script example I could including an almost identical call which works for a different primitive to prove that I was setting up the display pipeline correctly got me on the to-fix list in a few hours.