Google+ API Sample Demo shows no messages after clicking a button in the pop-up dialog

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Found in Release:
- Wiki page as of 12/02/2013

Platform information (OS, Browser, GWT version).  Does the issue exist on
other platforms?
- Google Chrome Version 32.0.1700.19 beta
- The same thing happened also on Google Chrome Windows stable.  But I forgot 
to memo the version.

Give a Detailed description of the problem.  If possible, please include
some code that reproduces the problem and a verbatim copy of any error
messages you can find.

- Reproduce procedure
1. Go to https://code.google.com/p/gwt-google-apis/wiki/GoogleAPIsSamples
2. Click "Samples: Demo" in Google+ API.
3. Click "Authenticate to get public activities".

- Expected Behavior
Some message will be shown after clicking a button in the pop-up dialog.

- Actual Behavior
No messages are shown after clicking a button in the pop-up dialog.
The "Network" tab in the inspector shows a 404 error in 
"https://www.googleapis.com/static/proxy.html?jsh=m%3B%2F_%2Fscs%2Fapps-static%2
F_%2Fjs%2Fk%3Doz.gapi.ja.cbG5BVEwgng.O%2Fm%3D__features__%2Fam%3D0Q%2Frt%3Dj%2Fd
%3D1%2Frs%3DAItRSTOOIZINJTojHYXaUn4250BGjfi-NQ"

Workaround if you have one:
- I could not find no workarounds.

Links to the relevant Google Group posts:

Original issue reported on code.google.com by hn...@google.com on 2 Dec 2013 at 1:41

[GoogleCodeExporter]

There is any workaround about this issue?

Thanks for advanced.

Original comment by francesc...@gmail.com on 26 Jan 2014 at 4:45

[GoogleCodeExporter]

Is this issue solved? What's the solution?

Thanks

Original comment by ricardo....@dome4u.pt on 10 Feb 2014 at 12:16