SE 1.189 not working with Midspace admin helper

MOD_ERROR: midspace admin helper, in file: Compilation of: C:\Users\bean\AppData\Roaming\SpaceEngineers\Mods\316190120.sbm_midspace.adminscripts failed:

MOD_ERROR: midspace admin helper, in file:
C:\Steam\steamapps...\Data\Scripts\midspace.adminscripts\Support.cs(170,115):
Error:
Argument 3: cannot convert from 'out VRageMath.Vector3' to 'out VRageMath.Vector3D'

MOD_ERROR: midspace admin helper, in file:
C:\Steam\steamapps...\Data\Scripts\midspace.adminscripts\Misc\CommandDetail.cs(272,29):
Error:
The type 'Dictionary<,>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Collections, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

MOD_ERROR: midspace admin helper, in file:
C:\Steam\steamapps...\Data\Scripts\midspace.adminscripts\ShipManagement\CommandListPrefabs.cs(40,27): Error:
The type 'Dictionary<,>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Collections, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

MOD_ERROR: midspace admin helper, in file:
C:\Steam\steamapps...\Data\Scripts\midspace.adminscripts\ShipManagement\CommandListPrefabs.cs(46,57): Error:
Argument 2: cannot convert from 'method group' to 'object'

Reproduce the compilation failure with Space Engineers 1.189, then inspect Support.cs:170, Misc/CommandDetail.cs:272, and ShipManagement/CommandListPrefabs.cs:40,46. Use the reported compiler errors as the starting point; the issue is done when the midspace admin helper compiles successfully without these errors.