Symptom:

When you run a Dynamic .NET TWAIN application, you may receive the following error message:

Cause:

1. The license in Licensing Tool is invalid.
2. The application doesn’t include valid license info of Dynamic.NET TWAIN.

Resolution:

The error occurs when adding the component to the desktop application.

The problem occurs when the license in Licensing Tool is invalid. Licensing Tool can be found at "Start -> All Programs -> Dynamic .NET TWAIN (version number) -> Licensing Tool". If you are using Windows Vista/7/2008, please right-click Licensing Tool and choose "Run as administrator".

The error occurs when running the application on a client machine.

Please make sure the Properties folder of the project that creates your EXE file includes "licenses.licx" file. You can find the file in the Properties folder of the project with Dynamic .NET TWAIN form.

For example:

1. You have a solution with the following structure:

Sln

- Prj1, includes a form with Dynamic .NET TWAIN.

- Prj2, the startup project. Clicking the button in Prj2 will start the form in Prj1. This project creates your EXE file.

In this case, you need to make sure licenses.licx exists in Properties folder of Prj2. You can find the file in the Properties folder of Prj1.

2. You have a solution where you reference the file DynamicDotNetTwain.dll without putting the control on your form, you can add the .licx file by:

          - Drag the control to the form, the .licx file will be created.
          - Delete the control from the form, the .licx will remain.

Also, please make sure the Build Action for the licenses.licx file is specified to Embedded Resource.