diff --git a/modules/org.openbravo.client.application/web/org.openbravo.client.application/js/main/ob-standard-window.js b/modules/org.openbravo.client.application/web/org.openbravo.client.application/js/main/ob-standard-window.js
--- a/modules/org.openbravo.client.application/web/org.openbravo.client.application/js/main/ob-standard-window.js
+++ b/modules/org.openbravo.client.application/web/org.openbravo.client.application/js/main/ob-standard-window.js
@@ -114,7 +114,7 @@
         len = parts.length,
         className = '_',
         tabSet = OB.MainView.TabSet,
-        vStack;
+        vStack, msg = 'Class not found, all modules in this window must be in development.'; // Change to DB Message
 
     if (params.windowId) {
       className = className + params.windowId;
@@ -133,6 +133,11 @@
         this.toolBarLayout.hide();
         this.view.hide();
         this.processLayout.show();
+      } else {
+        if (window.console) {
+          window.console.warn(msg);
+        }
+        isc.Log.logWarn(msg);
       }
     }
   },