diff -r 96ea47146c66 -r 63c5e5b16770 src/js/serializers/segmentapi-serializer.js
--- a/src/js/serializers/segmentapi-serializer.js	Tue Oct 01 16:16:35 2013 +0200
+++ b/src/js/serializers/segmentapi-serializer.js	Tue Oct 01 16:38:11 2013 +0200
@@ -1,3 +1,9 @@
+/* START segmentapi-serializer.js */
+
+if (typeof IriSP.serializers === "undefined") {
+    IriSP.serializers = {};
+}
+
 IriSP.serializers.segmentapi = {
     deSerialize : function(_data, _source) {
         var _annotationlist = new IriSP.Model.List(_source.directory),