1. Open Licensing Tool which can be found at: "Start -> All Programs -> Dynamic Web TWAIN (version number) -> Licensing Tool" if you installed Dynamic Web TWAIN.
If you are using Windows Vista/2008/7, please press the Shift key while right-clicking "Licensing Tool", and choose the "Run as administrator" option. You need to "Run as administrator" even when you are using an admin account of Windows.
You may double check the licensing info in the file "DynamlicWebTwainActiveX5.lic" under c:\windows\syswow64\ on 64-bit machines or c:\windows\system32\ on 32-bit machines.
2. Delete the old license.
3. Add the new license.
4. Click Close on the "Dynamic Web Twain ActiveX License Manager" window.
This step is VERY important. If you do not click the Close button, the new license will not be submitted.
5. If you are developing a web application, after changing the license (Web Server License) in Licensing Tool, you need to re-generate a corresponding LPK file and replace the old LPK file on your web server with the new one.
http://kb.dynamsoft.com/questions/41/How+to+generate+a+LPK+file%3F
3. Add the new license.
4. Click Close on the "Dynamic Web Twain ActiveX License Manager" window.
This step is VERY important. If you do not click the Close button, the new license will not be submitted.
5. If you are developing a web application, after changing the license (Web Server License) in Licensing Tool, you need to re-generate a corresponding LPK file and replace the old LPK file on your web server with the new one.
http://kb.dynamsoft.com/questions/41/How+to+generate+a+LPK+file%3F
