Index: /applications/editors/josm/plugins/sds/src/org/openstreetmap/hot/sds/DetermineSdsModificationsUploadHook.java
===================================================================
--- /applications/editors/josm/plugins/sds/src/org/openstreetmap/hot/sds/DetermineSdsModificationsUploadHook.java	(revision 33950)
+++ /applications/editors/josm/plugins/sds/src/org/openstreetmap/hot/sds/DetermineSdsModificationsUploadHook.java	(revision 33951)
@@ -45,5 +45,5 @@
         for (OsmPrimitive del : apiDataSet.getPrimitivesToDelete()) {
             IPrimitive old = plugin.getOriginalPrimitive(del);
-            if (hasSpecialTags(old)) {
+            if (old != null && hasSpecialTags(old)) {
                 // request deletion of all tags for this object on special server.
                 plugin.enqueueForUpload(del, new HashMap<String, String>(), false);