You rock!  The # in the pathname was exactly the problem.

Its great. It was a simple problem and I was wondering and searching for big solutions. Many thanks bro.

I'm quite happy to find the solution for my problem here! It was a C# directory once again. From a different directory it works quite fine!

Thank you!

Thanks.. I've been pulling my hair out over this one. Reminds me $MS$ has never really fix the 8 char dir file names yet... just work around's

Thanks for your discovery

Thank you very much - solved my problem.

Spot on :)

Yep, that was it!  I had put my chm in a directory with a "#" in the name ("C# Docs").   I renamed it "C Sharp Docs", and BAM!  Worked like a champ!  Thanks!

All these threads on 'unblocking' and fiddling the registry.... (i weep with joy and frustration)... IT WAS THE '#' IN THE FILE NAME ALL ALONG.... AAARRRRGGHH

Many thanks - You d'Man!!!

Thanks for the help. Had "#" in pathname.