Guy locks up game:

I'm willing to bet it's because you either:
a) Set the guy to Auto-Start and don't have a switch to set it to Action Key. The fix is to do just that - set a switch and a Page 2 to handle that switch.
b) The guy is trying to move where it can't. The fix is to click the "Ignore impossible movement" checkbox in the "Move Event" code option.

If any of these apply fix it yourself. If it doesn't, I can't help you without either screenshots of the code or you typing out the code. I can't fix what I can't see...

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Fonts: This is a workaround, but you don't need to download anything.