Problems Executing API commands

I just today started using the API in a test box, trying to use the CreatureGen script, but it doesn't seem to be working. I copy-pasted the doc straight from <a href="https://github.com/Roll20KenL/Roll20_API_Scripts/b" rel="nofollow">https://github.com/Roll20KenL/Roll20_API_Scripts/b</a>... Named the script "CreatureGen.js", pasted a test block from Paizo's site, and execute it with "!CreatureGen" in the room, but it does nothing. Am I doing something wrong, or is API down? I'm using chrome, in case that matters.

Hopefully Ken L. will drop in and see this. (Pretty sure this is his script.) You put the script in a tab of the API scripts page from campaign details, right?