diff --git a/src/Mod/Fem/App/FemPostFilterPyImp.cpp b/src/Mod/Fem/App/FemPostFilterPyImp.cpp
index 097915f78e..2e09c9e3f0 100644
--- a/src/Mod/Fem/App/FemPostFilterPyImp.cpp
+++ b/src/Mod/Fem/App/FemPostFilterPyImp.cpp
@@ -189,7 +189,7 @@ PyObject* FemPostFilterPy::getInputScalarFields(PyObject* args)
 
 PyObject* FemPostFilterPy::getOutputAlgorithm(PyObject* args)
 {
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
     // we take no arguments
     if (!PyArg_ParseTuple(args, "")) {
         return nullptr;
diff --git a/src/Mod/Fem/App/FemPostObjectPyImp.cpp b/src/Mod/Fem/App/FemPostObjectPyImp.cpp
index 27a1204bc0..a35e0b569a 100644
--- a/src/Mod/Fem/App/FemPostObjectPyImp.cpp
+++ b/src/Mod/Fem/App/FemPostObjectPyImp.cpp
@@ -29,7 +29,7 @@
 #include "FemPostObjectPy.h"
 #include "FemPostObjectPy.cpp"
 
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
     #include <vtkDataSet.h>
     #include <vtkPythonUtil.h>
 #endif //BUILD_FEM_VTK
@@ -61,7 +61,7 @@ PyObject* FemPostObjectPy::writeVTK(PyObject* args)
 
 PyObject* FemPostObjectPy::getDataSet(PyObject* args)
 {
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
     // we take no arguments
     if (!PyArg_ParseTuple(args, "")) {
         return nullptr;
diff --git a/src/Mod/Fem/App/FemPostPipelinePyImp.cpp b/src/Mod/Fem/App/FemPostPipelinePyImp.cpp
index 3154800802..388aed35de 100644
--- a/src/Mod/Fem/App/FemPostPipelinePyImp.cpp
+++ b/src/Mod/Fem/App/FemPostPipelinePyImp.cpp
@@ -34,7 +34,7 @@
 #include "FemPostPipelinePy.cpp"
 // clang-format on
 
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
     #include <vtkPythonUtil.h>
 #endif //BUILD_FEM_VTK
 
@@ -319,7 +319,7 @@ PyObject* FemPostPipelinePy::renameArrays(PyObject* args)
 
 PyObject* FemPostPipelinePy::getOutputAlgorithm(PyObject* args)
 {
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
     // we take no arguments
     if (!PyArg_ParseTuple(args, "")) {
         return nullptr;
diff --git a/src/Mod/Fem/CMakeLists.txt b/src/Mod/Fem/CMakeLists.txt
index 3ba5a83c3e..aca1b443f0 100755
--- a/src/Mod/Fem/CMakeLists.txt
+++ b/src/Mod/Fem/CMakeLists.txt
@@ -182,8 +182,6 @@ SET(FemObjects_SRCS
     femobjects/base_femelement.py
     femobjects/base_femmeshelement.py
     femobjects/base_fempythonobject.py
-    femobjects/base_fempostextractors.py
-    femobjects/base_fempostvisualizations.py
     femobjects/constant_vacuumpermittivity.py
     femobjects/constraint_bodyheatsource.py
     femobjects/constraint_centrif.py
@@ -216,8 +214,9 @@ SET(FemObjects_SRCS
 )
 
 if(BUILD_FEM_VTK_PYTHON)
-    SET(FemObjects_SRCS
-        ${FemObjects_SRCS}
+    list(APPEND FemObjects_SRCS
+        femobjects/base_fempostextractors.py
+        femobjects/base_fempostvisualizations.py
         femobjects/post_glyphfilter.py
         femobjects/post_extract1D.py
         femobjects/post_extract2D.py
@@ -633,8 +632,7 @@ SET(FemGuiTaskPanels_SRCS
 )
 
 if(BUILD_FEM_VTK_PYTHON)
-    SET(FemGuiTaskPanels_SRCS
-        ${FemGuiTaskPanels_SRCS}
+    list(APPEND FemGuiTaskPanels_SRCS
         femtaskpanels/task_post_glyphfilter.py
         femtaskpanels/task_post_histogram.py
         femtaskpanels/task_post_lineplot.py
@@ -653,13 +651,18 @@ SET(FemGuiUtils_SRCS
     femguiutils/disambiguate_solid_selection.py
     femguiutils/migrate_gui.py
     femguiutils/selection_widgets.py
-    femguiutils/vtk_module_handling.py
-    femguiutils/vtk_table_view.py
-    femguiutils/data_extraction.py
-    femguiutils/extract_link_view.py
-    femguiutils/post_visualization.py
 )
 
+if(BUILD_FEM_VTK_PYTHON)
+    list(APPEND FemGuiUtils_SRCS
+        femguiutils/vtk_module_handling.py
+        femguiutils/vtk_table_view.py
+        femguiutils/data_extraction.py
+        femguiutils/extract_link_view.py
+        femguiutils/post_visualization.py
+    )
+endif(BUILD_FEM_VTK_PYTHON)
+
 SET(FemGuiViewProvider_SRCS
     femviewprovider/__init__.py
     femviewprovider/view_base_femconstraint.py
@@ -667,8 +670,6 @@ SET(FemGuiViewProvider_SRCS
     femviewprovider/view_base_femmaterial.py
     femviewprovider/view_base_femmeshelement.py
     femviewprovider/view_base_femobject.py
-    femviewprovider/view_base_fempostvisualization.py
-    femviewprovider/view_base_fempostextractors.py
     femviewprovider/view_constant_vacuumpermittivity.py
     femviewprovider/view_constraint_bodyheatsource.py
     femviewprovider/view_constraint_centrif.py
@@ -701,10 +702,10 @@ SET(FemGuiViewProvider_SRCS
 )
 
 if(BUILD_FEM_VTK_PYTHON)
-    SET(FemGuiViewProvider_SRCS
-        ${FemGuiViewProvider_SRCS}
+    list(APPEND FemGuiViewProvider_SRCS
+        femviewprovider/view_base_fempostextractors.py
+        femviewprovider/view_base_fempostvisualization.py
         femviewprovider/view_post_glyphfilter.py
-        femviewprovider/view_post_extract.py
         femviewprovider/view_post_histogram.py
         femviewprovider/view_post_lineplot.py
         femviewprovider/view_post_table.py
diff --git a/src/Mod/Fem/Gui/TaskPostExtraction.cpp b/src/Mod/Fem/Gui/TaskPostExtraction.cpp
index 57f39a70a2..45ace5bb15 100644
--- a/src/Mod/Fem/Gui/TaskPostExtraction.cpp
+++ b/src/Mod/Fem/Gui/TaskPostExtraction.cpp
@@ -76,7 +76,7 @@ TaskPostExtraction::TaskPostExtraction(ViewProviderFemPostObject* view, QWidget*
     }
     catch (Py::Exception&) {
         Base::PyException e; // extract the Python error text
-        e.ReportException();
+        e.reportException();
     }
 
     if (m_panel.hasAttr(std::string("widget"))) {
@@ -129,7 +129,7 @@ void TaskPostExtraction::onPostDataChanged(Fem::FemPostObject* obj)
     }
     catch (Py::Exception&) {
         Base::PyException e; // extract the Python error text
-        e.ReportException();
+        e.reportException();
     }
 };
 
@@ -145,7 +145,7 @@ bool TaskPostExtraction::isGuiTaskOnly()
     }
     catch (Py::Exception&) {
         Base::PyException e; // extract the Python error text
-        e.ReportException();
+        e.reportException();
     }
 
     return false;
@@ -162,7 +162,7 @@ void TaskPostExtraction::apply()
     }
     catch (Py::Exception&) {
         Base::PyException e; // extract the Python error text
-        e.ReportException();
+        e.reportException();
     }
 }
 
@@ -178,7 +178,7 @@ bool TaskPostExtraction::initiallyCollapsed()
     }
     catch (Py::Exception&) {
         Base::PyException e; // extract the Python error text
-        e.ReportException();
+        e.reportException();
     }
 
     return false;
diff --git a/src/Mod/Fem/Gui/Workbench.cpp b/src/Mod/Fem/Gui/Workbench.cpp
index acd7202acc..44c1186c6f 100644
--- a/src/Mod/Fem/Gui/Workbench.cpp
+++ b/src/Mod/Fem/Gui/Workbench.cpp
@@ -215,7 +215,7 @@ Gui::ToolBarItem* Workbench::setupToolBars() const
              << "FEM_PostFilterCalculator"
              << "Separator"
              << "FEM_PostCreateFunctions"
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
              << "FEM_PostVisualization"
 #endif
              ;
@@ -371,7 +371,7 @@ Gui::MenuItem* Workbench::setupMenuBar() const
              << "FEM_PostFilterCalculator"
              << "Separator"
              << "FEM_PostCreateFunctions"
-#ifdef BUILD_FEM_VTK_WRAPPER
+#ifdef FC_USE_VTK_PYTHON
              << "FEM_PostVisualization"
 #endif
              ;
diff --git a/src/Mod/Fem/InitGui.py b/src/Mod/Fem/InitGui.py
index 8ac271d379..35c835f81e 100644
--- a/src/Mod/Fem/InitGui.py
+++ b/src/Mod/Fem/InitGui.py
@@ -81,9 +81,9 @@ class FemWorkbench(Workbench):
         False if femcommands.commands.__name__ else True
 
         # check vtk version to potentially find missmatchs
-        from femguiutils.vtk_module_handling import vtk_module_handling
-
-        vtk_module_handling()
+        if "BUILD_FEM_VTK_PYTHON" in FreeCAD.__cmake__:
+            from femguiutils.vtk_module_handling import vtk_module_handling
+            vtk_module_handling()
 
     def GetClassName(self):
         # see https://forum.freecad.org/viewtopic.php?f=10&t=43300
diff --git a/src/Mod/Fem/femcommands/commands.py b/src/Mod/Fem/femcommands/commands.py
index 50461484a2..8c85fc7270 100644
--- a/src/Mod/Fem/femcommands/commands.py
+++ b/src/Mod/Fem/femcommands/commands.py
@@ -40,7 +40,6 @@ from .manager import CommandManager
 from femtools.femutils import expandParentObject
 from femtools.femutils import is_of_type
 from femsolver.settings import get_default_solver
-from femguiutils import post_visualization
 
 # Python command definitions:
 # for C++ command definitions see src/Mod/Fem/Command.cpp
@@ -1294,4 +1293,6 @@ if "BUILD_FEM_VTK_PYTHON" in FreeCAD.__cmake__:
     import femobjects.post_lineplot
     import femobjects.post_histogram
     import femobjects.post_table
+
+    from femguiutils import post_visualization
     post_visualization.setup_commands("FEM_PostVisualization")
diff --git a/src/Mod/Fem/femcommands/manager.py b/src/Mod/Fem/femcommands/manager.py
index d57764e54b..50fbae0548 100644
--- a/src/Mod/Fem/femcommands/manager.py
+++ b/src/Mod/Fem/femcommands/manager.py
@@ -34,7 +34,6 @@ import FreeCAD
 
 from femtools.femutils import expandParentObject
 from femtools.femutils import is_of_type
-from femguiutils.vtk_module_handling import vtk_compatibility_abort
 
 if FreeCAD.GuiUp:
     from PySide import QtCore
@@ -380,7 +379,8 @@ class CommandManager:
         # like add_obj_on_gui_selobj_noset_edit but the selection is kept
         # and the selobj is expanded in the tree to see the added obj
 
-        # check if we should use python filter
+        # check if we should use python fitler
+        from femguiutils.vtk_module_handling import vtk_compatibility_abort
         if vtk_compatibility_abort(True):
             return
 
diff --git a/src/Mod/Fem/femobjects/post_glyphfilter.py b/src/Mod/Fem/femobjects/post_glyphfilter.py
index a783835656..51c7d480c6 100644
--- a/src/Mod/Fem/femobjects/post_glyphfilter.py
+++ b/src/Mod/Fem/femobjects/post_glyphfilter.py
@@ -33,7 +33,6 @@ import FreeCAD
 
 # check vtk version to potentially find missmatchs
 from femguiutils.vtk_module_handling import vtk_module_handling
-
 vtk_module_handling()
 
 # IMPORTANT: Never import vtk directly. Often vtk is compiled with different QT
diff --git a/src/Mod/Fem/femobjects/post_histogram.py b/src/Mod/Fem/femobjects/post_histogram.py
index 0a6277f5fe..fcbb1ce2e7 100644
--- a/src/Mod/Fem/femobjects/post_histogram.py
+++ b/src/Mod/Fem/femobjects/post_histogram.py
@@ -29,6 +29,9 @@ __url__ = "https://www.freecad.org"
 #  \ingroup FEM
 #  \brief Post processing plot displaying histograms
 
+# check vtk version to potentially find missmatchs
+from femguiutils.vtk_module_handling import vtk_module_handling
+vtk_module_handling()
 
 from . import base_fempostextractors
 from . import base_fempostvisualizations
diff --git a/src/Mod/Fem/femobjects/post_lineplot.py b/src/Mod/Fem/femobjects/post_lineplot.py
index 486241b367..8d4b725128 100644
--- a/src/Mod/Fem/femobjects/post_lineplot.py
+++ b/src/Mod/Fem/femobjects/post_lineplot.py
@@ -29,6 +29,10 @@ __url__ = "https://www.freecad.org"
 #  \ingroup FEM
 #  \brief Post processing plot displaying lines
 
+# check vtk version to potentially find missmatchs
+from femguiutils.vtk_module_handling import vtk_module_handling
+vtk_module_handling()
+
 from . import base_fempostextractors
 from . import base_fempostvisualizations
 from . import post_extract2D
diff --git a/src/Mod/Fem/femobjects/post_table.py b/src/Mod/Fem/femobjects/post_table.py
index 3d7d7be689..0a64dc733d 100644
--- a/src/Mod/Fem/femobjects/post_table.py
+++ b/src/Mod/Fem/femobjects/post_table.py
@@ -29,11 +29,14 @@ __url__ = "https://www.freecad.org"
 #  \ingroup FEM
 #  \brief Post processing plot displaying tables
 
+# check vtk version to potentially find missmatchs
+from femguiutils.vtk_module_handling import vtk_module_handling
+vtk_module_handling()
+
 from . import base_fempostextractors
 from . import base_fempostvisualizations
 from . import post_extract1D
 
-
 from femguiutils import post_visualization
 
 # register visualization and extractors