Therefore it is possible that your shortcut to the Forms571 program is pointing to a different drive letter and or folder location than the default one of C:\Forms571. To check this, right-click on the menu item or shortcut that you use to launch the Forms571 program and look at the properties.
If the TARGET does not point to the C:\Forms571 folder then you will have to reinstall the update and select the TARGET folder as the location for the newly installed program.