Trying to work on a C# project https://github.com/cliftonm/FlowSharp on my Mac (El Capitan 10.11.6). Install Rider, install mono connect to project and everything seems fine, but the project won't build.
Lots of stuff defined in the Services directory are not found (show up broken in References). File names in error messages actually exist (.csproj files from the project's local git workspace) and are readable.
Must be something basic, but help seems hard to find. Are there better tools for me? What do I need to make these tools work. New to C# and mono, but not to software.