Here Auric writes why doesn’t run: http://www.zbrushcentral.com/showthread.php?160733-ZBrush-4R2-Troubleshooting-FAQ
Q: The WWW search features in LightBox don’t work.
A: The companies that we use to gather the search results from are currently updating their remote search protocols. We will not be able to update the WWW search features until this has been done. No ETA is possible at this time.
Are there any news ?
How long they will update their remote search protocols ?
ZBrush4 and R2 specially is a really great launch!!! 
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I love it - all the new feature that makes sculpting much more intuitive than ever.
I missed the web search because is one of the great features that makes modeling/texturing faster 
I can’t wait - sorry :o