diff -r a49f32e3d73b -r 3bccc68a38e3 plugins/mod_bosh.lua
--- a/plugins/mod_bosh.lua	Mon Jul 08 21:38:08 2013 +0100
+++ b/plugins/mod_bosh.lua	Mon Jul 08 23:42:54 2013 +0100
@@ -361,7 +361,9 @@
 			stanza.attr.xmlns = nil;
 		end
 		stanza = session.filter("stanzas/in", stanza);
-		core_process_stanza(session, stanza);
+		if stanza then
+			core_process_stanza(session, stanza);
+		end
 	end
 end