[R] htmlParse Error

[vioravis]

I am trying to parse a webpage using the htmlParse command in XML package as
follows:

library(XML)
u = "http://en.wikipedia.org/wiki/World_population"
doc = htmlParse(u)

I get the following error:

Error in htmlParse(u) : 
  error in creating parser for http://en.wikipedia.org/wiki/World_population

I am using a R 2.13.1 (32 bit version) on a 64 bit Windows. (I tried
installing it in 64 bit version of R but getting an error that the previous
version cannot be removed)

Can someone please help with how to resolve this issue? 

Thank you.

Ravi


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