Space Engineers

Space Engineers

Escape From Mars Wico [Update WIP]
Error upon game start
I ran into this error that just repeats itself upon game start. Have I missed something simple?

2019-08-25 22:12:20.649 - Thread: 1 -> EscapeFromMars error: System.InvalidOperationException: Invalid property
at Sandbox.ModAPI.Interfaces.TerminalPropertyExtensions.Cast[TValue](ITerminalProperty property)
at EscapeFromMars.BaseManager.BlocksFixup(IMyCubeGrid grid)
at EscapeFromMars.BaseManager.GridInitialising(IMyCubeGrid grid)
at Duckroll.AbstractCore`1.UpdateableListImpl.InitModSystems()
at Duckroll.AbstractCore`1.UpdateBeforeSimulation()
2019-08-25 22:12:20.680 - Thread: 1 -> Loading voxel storage from file 'C:\Program Files (x86)\Steam\steamapps\common\SpaceEngineers\Content\VoxelMaps\MediumStoneIronCoreStoneCoverage.vx2'
2019-08-25 22:12:20.738 - Thread: 1 -> EscapeFromMars error: System.InvalidOperationException: Invalid property
at Sandbox.ModAPI.Interfaces.TerminalPropertyExtensions.Cast[TValue](ITerminalProperty property)
at EscapeFromMars.BaseManager.BlocksFixup(IMyCubeGrid grid)
at EscapeFromMars.BaseManager.GridInitialising(IMyCubeGrid grid)
at Duckroll.AbstractCore`1.UpdateableListImpl.InitModSystems()
at Duckroll.AbstractCore`1.UpdateBeforeSimulation()