ErrorList

General failure

• Symptom

When scanning an image with Dynamic Web TWAIN, you may receive the error message “General failure” in the ErrorString property.

• Cause

The problem occurs when the source (scanner) is not disabled completely after a scanning session or the source is currently unavailable.

• Resolution

You can reset the existing connections of the source by calling CloseSource & CloseSourceManager to close the sources existing connections before calling SelectSource.

function AcquireImage() {
  DWTObject.CloseSource();
  DWTObject.CloseSourceManager();
  DWTObject.SelectSource();
  DWTObject.OpenSource();
  DWTObject.AcquireImage();
}