Opening file in Glyphs Beta

Using latest version of Glyphs 2.0.0 beta, when opening a file…

The document “mygoodfont.glyphs” could not be opened.
This beta version of Glyphs is more than 30 days old. Please check for an update.

I have the latest I think: Version 2.0.0 (660) What I can do?

Go to the preferences, open updates, and activate cutting edge versions.

Ah ok, thanks!