The [wiki setup instructions](https://github.com/StressLevelZero/MarrowSDK-Legacy/wiki#project-setup) tell you to use https://github.com/StressLevelZero/MarrowSDK.git, which is now for v1.1.0(+) of the MarrowSDK. It should be changed to https://github.com/StressLevelZero/MarrowSDK-Legacy.git