[racket] All black images...Ahhh

I can give you a smaller program (little longer than 20 lines...sorry..but
it does show the error)
PLEASE DONT SELL THIS TO ANYONE, ETC. I TRUST U ALL.

PLEASE RUN IT SEVERAL TIMES IF YOU DON'T SEE THE ERROR ON THE FIRST RUN

CLICK "START" and move out of the START.... then HOVER OVER THE "START" and
then CLICK "START" >>>in that order>>>>START-NORM, START-OVER, and
START-CLICK are supposed to be seen.

I am not yelling...just so that your eye catches those key statements.

Hope you all are able to see the issue.
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