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Sequence error

  • Symptom

    When you fail to acquire images from your scanner, you may get this error.

  • Cause

    The problem happens when the process does not occur in the correct TWAIN sequence.

  • Resolution

    Check if you followed the acquisition sequence to get images from your device. For example, some methods and properties, like the PixelType property, can only be used after calling the OpenSource() method. Please check the TWAIN State Transition Diagram below for more information

TWAIN State Transition

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