diff --git a/ui (gen4)/features/sharp.js b/ui (gen4)/features/sharp.js
index 9044b857..c252cd8f 100755
--- a/ui (gen4)/features/sharp.js	
+++ b/ui (gen4)/features/sharp.js	
@@ -62,7 +62,7 @@ var SharpActions = actions.Actions({
 			if(this.previewConstructorWorker){
 				return
 			}
-			this.previewConstructorWorker = cp.form('./worker/preview-constructor')
+			this.previewConstructorWorker = cp.form('./worker/preview-constructor.js')
 		}],
 	stopWorker: ['- Sharp/',
 		function(){
@@ -70,6 +70,7 @@ var SharpActions = actions.Actions({
 			delete this.previewConstructorWorker
 		}],
 
+
 	//	.makePreviews()
 	//	.makePreviews('current')
 	//		-> actions