That's what I've been using to install mchronos; it installs fine that way.

By the way, there seems to be a problem with sphere mode. When I click on the S button, I get a disk on the screen, but the buttons on the bottom are gone. (They seem to still work, so if I guess their positions, I can get out of sphere mode.)
I checked the README to see if anything were mentioned; I noticed that at the top the "info" description is sort of missing.