Show the TWAIN Driver Window option is used to display the TWAIN driver window whenever a document is added using ScanNow option. TWAINDriver window will be displayed when you are adding a document from a Host Application using the Add Documents option, if you select Show the TWAIN Driver Window checkbox from PaperSave Options Menu. If you do not want to view TWAIN Driver window while adding the documents using ScanNow then you need to de-select 'Do Not Show the TWAIN Driver Window' checkbox from PaperSave Options Menu.