R help - Aug 2013 - Error: XML content does not seem to be XML: ''

Hi there,
I am attempting to access an Allegro Graph site, using SPARQL function in
RStudio and am getting this error message "Error: XML content does not seem
to be XML: ''. However, the same query that I am using within the SPARQL
function can get back the results when directly from the browser.

Please advise.

Cheers,
Anil
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