Grasshopper Viewport freezes after

Hallo strange behaviour, my Grasshopper Viewport freezes after executing this command:

If x Then
Dim tmpID As GUID

'' SectionGeom
For i As Integer = 0 To geo.Count - 1
tmpID = doc.Objects.Add(geo.item(i), objAtt)
doc.Objects.Select(tmpID)
Next
h = Rhino.Geometry.Hatch.Create(geo, 1, 0, 1)
For i As Integer = 0 To geo.count - 1
doc.Objects.addHatch(h(i), objAtt)
Next

'' 2dGeom

Rhino.RhinoDoc.ActiveDoc.Layers.SetCurrentLayerIndex(drauf, True)

Dim ID As new List(Of Guid)

For i As Integer = 0 To geo2D.Count - 1
tmpID = doc.Objects.Add(geo2D.item(i))
ID.add(tmpID)
doc.Objects.Select(tmpID)
Next

Rhino.RhinoApp.RunScript(" -_Make2d DrawingLayout=CurrentCPlane CreateHiddenLines=No _Enter ", False)

For i As Integer = 0 To ID.count - 1
doc.Objects.Delete(ID.item(i), True)
Next

'' Run Script to Bake Grasshopper Dimensions + Text

End If

Any suggestions?