remove gui commands if no gui is available

freecad/gears/commands.py

@@ -51,17 +51,18 @@ class BaseCommand(object):
     def create(cls):
         obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython", cls.NAME)
         cls.GEAR_FUNCTION(obj)
-        ViewProviderGear(obj.ViewObject)
+        if FreeCAD.GuiUp:
+            ViewProviderGear(obj.ViewObject)
 
-        # borrowed from threaded profiles
-        # puts the gear into an active container
-        body = Gui.ActiveDocument.ActiveView.getActiveObject("pdbody")
-        part = Gui.ActiveDocument.ActiveView.getActiveObject("part")
+            # borrowed from threaded profiles
+            # puts the gear into an active container
+            body = Gui.ActiveDocument.ActiveView.getActiveObject("pdbody")
+            part = Gui.ActiveDocument.ActiveView.getActiveObject("part")
 
-        if body:
-            body.Group += [obj]
-        elif part:
-            part.Group += [obj]
+            if body:
+                body.Group += [obj]
+            elif part:
+                part.Group += [obj]
         return obj
 
     def GetResources(self):