*sigh*

Don't go and change all the 'Waitframes();' to 'Waitframe();', that won't do you any good.

How many scripts are you using?

It it's more than one, make sure they're all in the same .z file.
Also, it'd probably be a good idea for you to put
Code:
import "std.zh"
on the first line of the file

The things that aren't compiling were declared within std.zh, and you haven't told ZScript to load it, therefore it doesn't know what they are.

What I don't understand is why they're not just loaded by default.