When you are testing websites where items only appear if you are hovering with your mouse over certain elements (for example a button or a menu item), you will get an error during the replay of the script. Silk Performer cannot detect the item because the hovering event is not recorded. Menus that are built with JavaScript are a good example for such a case. However, with Silk Performer you can fix this problem during the replay of a script.
In the Browser Application, you can click the Troubleshoot button when the error occurs, select Insert Mouse Move from the list, move the mouse over the UI element, press <Pause/Break> on your keyboard, click Insert, and click Rerun Script. Now the script will run without an error.