Hi Frank,
Can you please use the tool at
http://www.displaylink.com/support/ask_question.php
And let us have the logs? You can attach them here:
http://www.displaylink.com/support/ask_question.php
Are the screens continuously flashing or they flash 'only' when the apps are started and closed? During the flashing is anything else happening (resolution change, windows moving, etc.)?