Loading the site in an Incognito window fixed the problem for me. AdBlock or something might be stopping some scripts from loading.

Ditto, using Chrome 30. Going to try Firefox, then will see if it's some HTTP request not working.

Edit: Working in Chrome now.

with webkit here it did not load on the tutorial but loaded when i quit it.

Indeed, we have a weird intermittent failure on component loading that we haven't figured out yet. A few reloads tends to work, as a temporary workaround.

Interesting that it always hangs on "Loading..." with Firefox 24, but always works with Chromium 29 ...

That makes two of us.