There can be a couple of reasons why a "?" shows up in the Application row.
It can be due to an application having been uninstalled. Or you updated an application and created a new version and folder and removed the older version. These will both create a "?".
|The image to the right shows the Pen Tablet panel. This can also be the Quick Keys panel.|
 It shows the "?" that appears once you uninstalled an application or an updated application and the old version was removed.
 To remove the "?" from the application row, click on the "?" icon. You will notice the Yellow bar appears under the icon.
 Click on the Gear icon and select from the dropdown menu Remove Selected Applications.
Click on the Remove button, which will then be removed from the Application row.
 The icon has been removed.