Index: /trunk/src/org/openstreetmap/josm/actions/SplitWayAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/SplitWayAction.java	(revision 484)
+++ /trunk/src/org/openstreetmap/josm/actions/SplitWayAction.java	(revision 485)
@@ -96,4 +96,5 @@
 			for (Node n : selectedNodes) {
 				for (Way w : Main.ds.ways) {
+					if (w.deleted || w.incomplete) continue;
 					for (Node wn : w.nodes) {
 						if (n.equals(wn)) {