Sad but true -- Translation question

Yeah, I need help. Here's my script:

#include "zcommon.acs"

script 1 OPEN
{
	CreateTranslation (1, 64:79=112:127);
	Thing_SetTranslation (2, 1);
}

So it's supposed to take all brown parts of monsters tagged 2, and change them to corresponding green parts. Simple right? Then how come I'm getting:

Line 6: Thing_SetTranslation (2, 1);
Function thing_settranslation is used but not defined

Give me a hand here.

Most likely your header is out of date. Judging from this special's number I'd say it is one of the newer ones and therefore not supported in older headers.

Oh. So, where do I get a new one?

Chances are your version of acc is out of date - the newest version is at:

http://zdoom.notgod.com/ftp/acc130.zip

Alrighty.