[R] Problem accessing help files

Duncan Murdoch murdoch at stats.uwo.ca
Wed Feb 3 23:57:13 CET 2010

On 03/02/2010 5:14 PM, Jonathan wrote:
> Rich:
>     Both IE and Firefox are unable to find the link you supplied.  However,
> that's only because I've restarted my R session since I pasted the error
> output (and it appears that each time I restart R, the URL is slightly
> different).  This time, I get:
>> ?sum
> starting httpd help server ... done
> Error in shell.exec(url) :
>   access to '' denied
>  ---
> If I paste the new URL into either browser, I can read the entry without
> issue.  This is what I've been doing to read help entries, but it's tedious
> to copy and paste the URL into a browser every time I want to read the entry
> for a particular function..
> Happy to hear any other ideas!

What happens if you paste that into the "Run" box on the start menu?  It 
looks to me as though the association between URLs and your browser is 

Another likely problem is antivirus software.  If you can temporarily 
turn it off, see if that helps.

Duncan Murdoch

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