diff --git a/ChangeLog b/ChangeLog
index 355c33ad..5d443079 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18361,3 +18361,6 @@
 	segfault when playing an event in a null log.
 2019-01-10 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a typo in 'apis/pypad/scripts/pypad_xmpad.exemplar'.
+2019-01-10 Fred Gleason <fredg@paravelsystems.com>
+	* Fixed a bug in 'pypad_xds.py' that threw an exception when
+	processing a PAD update originated from a null log.
diff --git a/apis/pypad/scripts/pypad_xds.py b/apis/pypad/scripts/pypad_xds.py
index 42b016f0..d6f3b990 100755
--- a/apis/pypad/scripts/pypad_xds.py
+++ b/apis/pypad/scripts/pypad_xds.py
@@ -64,7 +64,7 @@ def ProcessPad(update):
     while(True):
         section='Udp'+str(n)
         try:
-            if update.shouldBeProcessed(section) and update.hasPadType(pypad.TYPE_NOW):
+            if update.shouldBeProcessed(section) and update.hasPadType(pypad.TYPE_NOW) and update.hasService():
                 packet='0:'+update.serviceProgramCode()+':'+update.config().get(section,'IsciPrefix')+FilterField(update.padField(pypad.TYPE_NOW,pypad.FIELD_EXTERNAL_EVENT_ID))+':*'
                 try:
                     #