Pressing the Start button does not start Scanning.
For Windows 95, NT 4.0, and Macintosh Make sure the Scanner Monitor software is running and check the Scanner Monitor's Launch Application path is set correctly.
For Windows 98 Click the Events tab in your scanner's Properties dialog box and make sure the Disable device events check box is clear. And make sure the Start button is selected as the Scannerevents, and at least one scanner event recognizable application in the Send to this application box is selected.