1 item (1 fix)
An s&box game csproj project-references the engine's Base Library csproj inside the Steam install. A first build or a rebuild writes generated intermediates into the engine tree even with an absolute OutputPath, and duplicate attribute files under the base addon then stop the engine booting. BaseIntermediateOutputPath is not the fix, it is a second trap. Clear the base addon's obj and .build folders to recover.
Want to know when new guides or fixes drop? Join the community to help build this out. Report gotchas, flag outdated fixes, or just lurk.