Not wanting to be another to trigger the panic button:

1) Call Order.
2) Report Orders by Order Number.
3) Click quickly ... (very quickly) or with the enter key on the Print button.
(If it is not fast on the trigger, you will not be able to simulate the effect).

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4) To work around the problem, do not try to disable the button once, if the report is sent directly to the printer instead of the screen and the report cancel button is pressed, it tries to return the focus to the inactive button , generating the error:

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I do not know why I'm worried, with Winprint 2 or 1. . .
Vicent warned me:
Re 4: The future of reporting (printing) is not in Winprint or BasicReport, it is DataFlex Reports