failed to run the demo

[kdepp]

An error occured
The error was reported with the following id: 'x95KurhEiK7y9xZvNJoK'

Please send this error message to us:
'ErrorId: x95KurhEiK7y9xZvNJoK
UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_1) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17
Uncaught TypeError: undefined is not a function in http://beta.etherpad.org/static/js/html10n.js at line 725'

[JohnMcLear]

What URL were you on?