Problem with wg and json

Hi, trying to fetch a stock quote with wg.

$wg("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22IBM%22)%0A%09%09&env=http%3A%2F%2Fdatatables.org%2Falltables.env&format=json",json,".query.results.quote.symbol")$

The URL works in a browser but KLWP just displays "Loading".

This example works for me though:

$wg("http://thegremium.org/~doc/rbtv/wopla/wopla.data.json", json,".[0].days[0].shows[?(@.time>'02:15')].id")$

Any idea what's wrong?