diff --git a/ui (gen4)/lib/preview.js b/ui (gen4)/lib/preview.js
new file mode 100755
index 00000000..c75b2a20
--- /dev/null
+++ b/ui (gen4)/lib/preview.js	
@@ -0,0 +1,19 @@
+/**********************************************************************
+* 
+*
+*
+**********************************************************************/
+
+define(function(require){ var module = {}
+
+//var DEBUG = DEBUG != null ? DEBUG : true
+
+
+/*********************************************************************/
+
+
+
+
+/**********************************************************************
+* vim:set ts=4 sw=4 :                                                */
+return module })
diff --git a/ui (gen4)/workers/preview-constructor.js b/ui (gen4)/workers/preview-constructor.js
index 66386bf9..6b70f191 100755
--- a/ui (gen4)/workers/preview-constructor.js	
+++ b/ui (gen4)/workers/preview-constructor.js	
@@ -6,6 +6,9 @@
 
 var sharp = require('sharp')
 
+var requirejs = require('requirejs')
+
+
 
 /*********************************************************************/