PartDesign: [skip ci] if numpy fails to load due a RuntimeError then handle this exception but still load the workbench

src/Mod/PartDesign/InitGui.py

@@ -39,7 +39,10 @@ class PartDesignWorkbench ( Workbench ):
     def Initialize(self):
         # load the module
         try:
+            import traceback
             from PartDesign.WizardShaft import WizardShaft
+        except RuntimeError:
+            print ("{}".format(traceback.format_exc()))
         except ImportError:
             print("Wizard shaft module cannot be loaded")
             try: