diff --git a/CompoundFilter2.py b/CompoundFilter2.py
index fc96f2c..0d1dd13 100644
--- a/CompoundFilter2.py
+++ b/CompoundFilter2.py
@@ -47,7 +47,8 @@ def makeCompoundFilter(name):
     '''makeCompoundFilter(name): makes a CompoundFilter object.'''
     obj = App.ActiveDocument.addObject("Part::FeaturePython",name)
     _CompoundFilter(obj)
-    _ViewProviderCompoundFilter(obj.ViewObject)
+    if FreeCAD.GuiUp:
+        _ViewProviderCompoundFilter(obj.ViewObject)
     return obj
 
 class _CompoundFilter:
diff --git a/FuseCompound2.py b/FuseCompound2.py
index 5260ea8..27fd06d 100644
--- a/FuseCompound2.py
+++ b/FuseCompound2.py
@@ -35,7 +35,8 @@ def makeFuseCompound(name):
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     _FuseCompound(obj)
     obj.Refine = getParamRefine()
-    _ViewProviderFuseCompound(obj.ViewObject)
+    if FreeCAD.GuiUp:
+        _ViewProviderFuseCompound(obj.ViewObject)
     return obj
 
 class _FuseCompound:
diff --git a/lattice2AttachablePlacement.py b/lattice2AttachablePlacement.py
index a132adb..eca48fe 100644
--- a/lattice2AttachablePlacement.py
+++ b/lattice2AttachablePlacement.py
@@ -44,7 +44,8 @@ def makeAttachablePlacement(name):
         obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
         obj.addExtension("Part::AttachExtensionPython", None)
     AttachablePlacement(obj)
-    ViewProviderAttachablePlacement(obj.ViewObject)        
+    if FreeCAD.GuiUp:
+        ViewProviderAttachablePlacement(obj.ViewObject)        
     return obj
 
 class AttachablePlacement(lattice2BaseFeature.LatticeFeature):
diff --git a/lattice2BaseFeature.py b/lattice2BaseFeature.py
index 7e00ee5..f190630 100644
--- a/lattice2BaseFeature.py
+++ b/lattice2BaseFeature.py
@@ -53,10 +53,11 @@ def makeLatticeFeature(name, AppClass, ViewClass):
     '''makeLatticeFeature(name, AppClass, ViewClass = None): makes a document object for a LatticeFeature-derived object.'''
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     AppClass(obj)
-    if ViewClass:
-        vp = ViewClass(obj.ViewObject)
-    else:
-        vp = ViewProviderLatticeFeature(obj.ViewObject)
+    if FreeCAD.GuiUp:
+        if ViewClass:
+            vp = ViewClass(obj.ViewObject)
+        else:
+            vp = ViewProviderLatticeFeature(obj.ViewObject)
         
     return obj
     
diff --git a/lattice2BoundBox.py b/lattice2BoundBox.py
index da43546..eb74d5d 100644
--- a/lattice2BoundBox.py
+++ b/lattice2BoundBox.py
@@ -99,7 +99,8 @@ def makeBoundBox(name):
     '''makeBoundBox(name): makes a BoundBox object.'''
     obj = App.ActiveDocument.addObject("Part::FeaturePython",name)
     _BoundBox(obj)
-    _ViewProviderBoundBox(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        _ViewProviderBoundBox(obj.ViewObject)
     return obj
 
 class _BoundBox:
diff --git a/lattice2Downgrade.py b/lattice2Downgrade.py
index 6f81000..bc2cbaf 100644
--- a/lattice2Downgrade.py
+++ b/lattice2Downgrade.py
@@ -51,7 +51,8 @@ def makeLatticeDowngrade(name):
     '''makeLatticeDowngrade(name): makes a latticeDowngrade object.'''
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     _latticeDowngrade(obj)
-    _ViewProviderLatticeDowngrade(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        _ViewProviderLatticeDowngrade(obj.ViewObject)
     return obj
 
 
diff --git a/lattice2Mirror.py b/lattice2Mirror.py
index 7155e1a..c95f313 100644
--- a/lattice2Mirror.py
+++ b/lattice2Mirror.py
@@ -81,7 +81,8 @@ def makeLatticeMirror(name):
     '''makeLatticeMirror(name): makes a LatticeMirror object.'''
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     LatticeMirror(obj)
-    ViewProviderLatticeMirror(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderLatticeMirror(obj.ViewObject)
     return obj
 
 
diff --git a/lattice2RecomputeLocker.py b/lattice2RecomputeLocker.py
index ae54a91..726818e 100644
--- a/lattice2RecomputeLocker.py
+++ b/lattice2RecomputeLocker.py
@@ -89,7 +89,8 @@ def makeRecomputeLocker(name):
     '''makeRecomputeLocker(name): makes a RecomputeLocker document object.'''
     obj = FreeCAD.ActiveDocument.addObject("App::FeaturePython",name)
     LatticeRecomputeLocker(obj)
-    ViewProviderLatticeRecomputeLocker(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderLatticeRecomputeLocker(obj.ViewObject)
     return obj
 
 class LatticeRecomputeLocker:
diff --git a/lattice2ShapeInfoFeature.py b/lattice2ShapeInfoFeature.py
index 243a1aa..be80ad0 100644
--- a/lattice2ShapeInfoFeature.py
+++ b/lattice2ShapeInfoFeature.py
@@ -36,7 +36,8 @@ def makeShapeInfoFeature(name):
     '''makeShapeInfoFeature(name): makes a ShapeInfoFeature object.'''
     obj = App.ActiveDocument.addObject("App::FeaturePython",name)
     ShapeInfoFeature(obj)
-    ViewProviderShapeInfo(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderShapeInfo(obj.ViewObject)
     return obj
     
 
diff --git a/lattice2ShapeString.py b/lattice2ShapeString.py
index e73e58b..7e08fdb 100644
--- a/lattice2ShapeString.py
+++ b/lattice2ShapeString.py
@@ -74,7 +74,8 @@ def makeLatticeShapeString(name):
     '''makeBoundBox(name): makes a BoundBox object.'''
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     LatticeShapeString(obj)
-    ViewProviderLatticeShapeString(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderLatticeShapeString(obj.ViewObject)
     return obj
 
 class FoolFeatureDocumentObject:
diff --git a/lattice2Slice.py b/lattice2Slice.py
index 869bed5..3d5a594 100644
--- a/lattice2Slice.py
+++ b/lattice2Slice.py
@@ -34,7 +34,8 @@ def makeLatticeSlice(name):
     obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
     LatticeSlice(obj)
     obj.Refine = getParamRefine()
-    ViewProviderLatticeSlice(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderLatticeSlice(obj.ViewObject)
     return obj
 
 def float_fuzzy_equal(v1, v2, rel_tol):
diff --git a/lattice2SubLink.py b/lattice2SubLink.py
index 61d846a..c3d876d 100644
--- a/lattice2SubLink.py
+++ b/lattice2SubLink.py
@@ -40,7 +40,8 @@ def makeSubLink(name):
     '''makeSubLink(name): makes a SubLink object.'''
     obj = App.ActiveDocument.addObject("Part::FeaturePython",name)
     LatticeSubLink(obj)
-    ViewProviderSubLink(obj.ViewObject)
+    if FreeCAD.GuiUp:        
+        ViewProviderSubLink(obj.ViewObject)
     return obj