Error "Licensing for this product has stopped working" when you start any Adobe Photoshop CS 3 application

Set the FLEXnet Licensing Service to Manual and Start the service. (Windows only)

1. Choose Start > Control Panel.
2. Double-click Administrative Tools.
3. Double-click Services.
4. Double-click the FLEXnet Licensing Service to open the Properties dialog box.
5. Click the Startup Type menu, and then select Manual.
6. Click Apply.
7. In the Services Status section, click Start to start the service.
8. Click Apply, and then click OK.
9. Close all open dialogs.

Start your Adobe Photoshop CS3 product.