Huh – that was an odd one. I copied a bunch of controls over to my Windows 7 box and the DLLs work, but the help files are stuffed;
It seems this is common problem, fixed by right-clicking the CHM file and clicking on an “Unblock” button which I’ve never seen before!
I can’t claim credit for this – found it at Rob Chandler’s blog here. Weird sense of priorities, huh? OK to copy and run any old DLL that you found lying in the bin, but a helpfile? Woooohhhh… no… that’s much more dangerous!

Thanks…this post is very helpful!
– z
yep, helped me too. thanks
Thanks I am glad I found this.
This problem has come back for me with ie9
[...] this: http://www.scottleckie.com/2009/05/downloaded-chm-help-file-shows-navigation-to-the-webpage-was-canc... Answered by Jane [...]