I don't see the missing library in his repository. If you can find the dll on your hard drive, you can click on the LOAD button. Otherwise, I suggest you contact the author.
This may help
https://github.com/search?q=repo%3Achuongmep%2FCadAddinManager%20Mono&type=code
https://www.mono-project.com/docs/tools+libraries/libraries/Mono.Cecil/
// Called Kerry in my other life.
Everything will work just as you expect it to, unless your expectations are incorrect.
Sometimes the question is more important than the answer.
class keyThumper<T> : Lazy<T>; another Swamper
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