Removing dependency on lxml - fixed some bugs on deleting a job and all it's sub components.

src/Mod/Path/PathScripts/PathDressupHoldingTags.py

@@ -1422,7 +1422,10 @@ class ViewProviderDressup:
                             group.remove(g)
                     i.Group = group
                     #print i.Group
-            FreeCADGui.ActiveDocument.getObject(self.obj.Base.Name).Visibility = False
+            if self.obj.Base:
+                obj = FreeCADGui.ActiveDocument.getObject(self.obj.Base.Name)
+                if obj:
+                    obj.Visibility = False
             return [self.obj.Base]
         return []
 
@@ -1457,7 +1460,10 @@ class ViewProviderDressup:
 
     def onDelete(self, arg1=None, arg2=None):
         '''this makes sure that the base operation is added back to the project and visible'''
-        FreeCADGui.ActiveDocument.getObject(arg1.Object.Base.Name).Visibility = True
+        if arg1.Object.Base:
+            obj = FreeCADGui.ActiveDocument.getObject(arg1.Object.Base.Name)
+            if obj:
+                obj.Visibility = True
         PathUtils.addToJob(arg1.Object.Base)
         return True
 

src/Mod/Path/PathScripts/PathJob.py

@@ -30,7 +30,7 @@ import PathScripts.PathLog as PathLog
 import PathScripts.PathToolController as PathToolController
 import PathScripts.PathUtil as PathUtil
 import glob
-import lxml.etree as xml
+import xml.etree.ElementTree as xml
 import os
 import sys
 
@@ -132,6 +132,7 @@ class ObjectPathJob:
         attrs[JobTemplate.GeometryTolerance]           = str(obj.GeometryTolerance.Value)
         if obj.Description:
             attrs[JobTemplate.Description]             = obj.Description
+        return attrs
 
     def __getstate__(self):
         return None
@@ -487,7 +488,7 @@ class CommandJobExportTemplate:
             if hasattr(obj, 'Tool') and hasattr(obj, 'SpindleDir'):
                 tc = xml.SubElement(root, JobTemplate.ToolController, obj.Proxy.templateAttrs(obj))
                 tc.append(xml.fromstring(obj.Tool.Content))
-        xml.ElementTree(root).write(path, pretty_print=True)
+        xml.ElementTree(root).write(path)
 
 if FreeCAD.GuiUp:
     # register the FreeCAD command

src/Mod/Path/PathScripts/PathToolController.py

@@ -30,7 +30,7 @@ import Path
 import PathScripts
 import PathScripts.PathLog as PathLog
 import PathUtils
-import lxml.etree as xml
+import xml.etree.ElementTree as xml
 
 from FreeCAD import Units
 from PySide import QtCore, QtGui

src/Mod/Path/PathScripts/PathUtils.py

@@ -438,9 +438,10 @@ def addToJob(obj, jobname=None):
                 print(form.cboProject.currentText())
                 job = [i for i in jobs if i.Name == form.cboProject.currentText()][0]
 
-    g = job.Group
-    g.append(obj)
-    job.Group = g
+    if obj:
+        g = job.Group
+        g.append(obj)
+        job.Group = g
     return job