Index: TemplateCommandDeleteResource.java
===================================================================
--- TemplateCommandDeleteResource.java	(revision 55991)
+++ TemplateCommandDeleteResource.java	(working copy)
@@ -124,7 +124,7 @@
         MediaType.APPLICATION_XML,
         MediaType.APPLICATION_FORM_URLENCODED})
     public Response hack(ParameterMap data) {
-        if (data.containsKey("operation")) {
+        if (data != null && data.containsKey("operation")) {
             List<String> l = data.get("operation");
             if (l.contains("__deleteoperation")) {