Thanks for the info, someday i'll get around to digging into hlsl enough to actually understand...A few days ago I fixed some documentation that was compiled to CHM. There where some images missing when opened on other machines - it worked fine on my machine but that's because it found those images on my hard disk. So I added those images and created a new CHM file.
This time I copied my new CHM to a network machine for testing so I could detect if still some images were missing. Double clicked on the new file and … bang - no content at all! Huh?!!
I thought I broke that thing now completely and started investigating …. but after a while I came across this webpage where it says:
if you attempt to load a CHM file remotely from another machine (mapped-network drive for instance), the security policy will place a restriction on loading the HTML content
Doh! 
Don't waste your time with this kind of #@!§ ! 
