Mac and No Shaders Update
This applies to all Mac versions post Mac Sierra, and all MXWendler versions.
When you try to update Shaders via Shaders Management in Settings you receive an error that you don't have write permission for your user.
Under new versions of OSX, Gatekeeper dislocates unsigned applications to random paths on start resulting some software issues with user privileges.
You need to disable the App Translocation function of MacOS Gatekeeper. Please follow this troubleshooting: Mac Sierra 10.12 Disable App Translocation