> There is no JavaScript in the html-pages, the links are 
> pure html.
> The hts-log.txt contains the following messages:
> 10:49:27	Error: 	'Unable to open file' (-5) after 3 
> retries at link server1/folder2/slide1.ppt (from 
> www.company.com/path/service_planning/slm/index.html)

This message is typically sent when httrack attempt to open 
a "local" file (file://) without success.

I suspect httrack not being able to recognize:
<file://server/path>

In fact httrack expects:
<file:////server/path>

I will fix this bug in the next pre-release.