PATH: Prevent Job creation without Base object.

PathMillFace won't add a base if it isn't known to the parent

src/Mod/Path/PathScripts/PathJob.py

@@ -243,6 +243,9 @@ class TaskPanel:
         self.postProcessorArgsDefaultTooltip = self.form.cboPostProcessorArgs.toolTip()
 
     def accept(self):
+        if self.obj.Base is None:
+            QtGui.QMessageBox.information(None,"","No Base Object Selected.")
+            return
         self.getFields()
         FreeCADGui.ActiveDocument.resetEdit()
         FreeCADGui.Control.closeDialog()

src/Mod/Path/PathScripts/PathMillFace.py

@@ -27,6 +27,7 @@ import Path
 from PySide import QtCore, QtGui
 from PathScripts import PathUtils
 import Part
+import PathScripts.PathUtils
 import PathScripts.PathKurveUtils
 import area
 import TechDraw
@@ -135,6 +136,10 @@ class ObjectFace:
 
 
     def addFacebase(self, obj, ss, sub=""):
+        parent = PathScripts.PathUtils.findParentJob(obj)
+        if parent.Base is None:
+            return
+
         baselist = obj.Base
         if baselist is None:
             baselist = []