I believe that you can ignore this error as the
mysqld should still start up.
However, in trying to reproduce the problem, I've found a glitch in the quick start guide for Windows, a "-" (the standard dash, ASCII 45) has been substituted with a "–" (the long dash, ASCII 150), the correct options for the MySQL client should be "-h 127.0.0.1 -P5000 -u root".
Try this out (i.e. type out the option rather than cutting and pasting from the quick start guide).
With the wrong character, the MySQL client refuses to connect to the MySQL daemon which could give the impression that the MySQL daemon process (
mysqld) wasn't running correctly.