Symptoms:
 
When you access a TWAIN related web page or run a TWAIN application, you may receive the following error message:

 

Cause: 

The license of the trial version has expired.

Resolution: 

1. Send a mail to Catherine@dynamsoft.com to ask for an extended trial license. Please specify the version and edition of Dynamic Web TWAIN you are using in your mail. For example, you are using the 5.1 version of Plug-in edition.

2. Update the license in Licensing Tool with the extended one. You can click here to check the steps on how to do that.

3. If you are developing a Web application, generate a new LPK file with the extended trial license. You can click here to check the steps on how to create a LPK file.