Error in Font Validator

Font Validator gives me this error. Don’t know what it means and how to prevent it. Any ideas?

That is most like due to some new format in OpenType that fontValidatior doesn’t know about. Please send me the file that I can have a look at it myself.

The font you send me seems to be fine. That is an issue with fontValidatior. Maybe ask HinTak if he can fix it?