> 05:29:50 Error:  'Connect Error' (-4) after 2 retries at 


> link content.nejm.org/robots.txt (from primary/primary)


> 05:30:53 Error:  'Connect Error' (-4) after 2 retries at 


> link content.nejm.org/cgi/collection/neurologic_disease 


> (from primary/primary)




This is often a proxy problem.  Do you have a proxy defined 
in your browser?  If so, try copying those details into 
HTTrack.


I tested the site with HTTrack and was able to download the 
homepage successfully.