Index: /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/coverage/CoverageCalculatorProcess.java
===================================================================
--- /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/coverage/CoverageCalculatorProcess.java	(revision 419)
+++ /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/coverage/CoverageCalculatorProcess.java	(revision 420)
@@ -160,5 +160,8 @@
 		double weight = 0.0;
 		for (List<? extends Event<?>> subSeq : containedSubSeqs) {
-			weight += subSeqWeights.get(subSeq);
+			Double curWeight = subSeqWeights.get(subSeq);
+			if( curWeight!=null ) {
+				weight += curWeight;
+			}
 		}
 		return weight;