Added reloading of post processor to pick up user changes in the script in case they edited it.

src/Mod/Path/PathScripts/PathJob.py

@@ -115,6 +115,12 @@ class ObjectPathJob:
             postname = obj.PostProcessor + "_post"
 
             exec "import %s as current_post" % postname
+            # make sure the script is reloaded if it was previously loaded
+            # should the script have been imported for the first time above
+            # then the initialization code of the script gets executed twice
+            # resulting in 2 load messages if the script outputs one of those.
+            exec "reload(%s)" % 'current_post'
+
             if hasattr(current_post, "UNITS"):
                 if current_post.UNITS == "G21":
                     obj.MachineUnits = "Metric"

src/Mod/Path/PathScripts/PathPost.py

@@ -95,7 +95,10 @@ class CommandPathPost:
                     postArgs = postobj.PostProcessorArgs
 
         postname += "_post"
-        exec "import %s as current_post" % postname
+        try:
+            current_post
+        except NameError:
+            exec "import %s as current_post" % postname
         reload(current_post)
         current_post.export(obj, filename, postArgs)