Thanks for your response and trying out the demo folder.
The dialog you're getting is correct but you should see 393.62 on the stack (Apple's stock price from yesterday's close).
So, this is somehow not working for you. On the other hand, your Internet connection works or else you wouldn't have gotten the WolframAlpha page, or the periodic table.
A couple of months ago, the Stocks folder was updated, as Google had slightly changed their API. I forget the error one got with the old code.
I don't want to take too much of your time, but could you make sure you have the latest version of the folder? See if you have the "cc" and "€→US$" and "US$→€" programs in the Stocks folder. If so, do these programs work for you? To test, enter, say, 1 and press €→US$. Your stack should say "1.3372" (if you run this today).
If you don't have the latest folder, everything might be explained, and the fix is to update both the Stocks and Demos folders via My Data | Folders (under Downloadables) and grabbing Stocks and Demos from the Updates section.
Also, typing "version" should yield "1.3.10" on the stack. (This is the version of the calculator.)