hmm, I didn't find this error locally either. I will try using file://. Thanks for the report.
Also, if you are interested, the project is on GitHub: https://github.com/webdatarender
Also, if you are interested, the project is on GitHub: https://github.com/webdatarender
In particular browsers tend to be a lot more enthusiastic about treating local files as unicode than they are for responses from web servers.
The reason the meta charset doesn't pick up is you're missing quotes around `utf-8` (also it may be past the 1024 byte mark, hard to say without running wc).