Source Error

I'm just mucking around with this source code and when ever I try and complie it , it would say cannot open include file 'xmnamath.h'
If anyone could just gimme a hand would be great

It means you dont have that header, try removing that line. (Might cause errors, though)

Removing that line causes alot of errors over 500

Then you're missing a required header, go look where to find it.