This has confused me for a while and I just realized the solution. A few weeks ago I tried to download the Sharepoint help documentation which si a CHM file. I could never read it. The contents were there (on the left) but the actual documentation would not appear.
The problem, I just realized when I downloaded another CHM a few minutes ago, is that the content is blocked because it was downloaded from the internet. If you look at the properties of the file, you will see that you can unblock the file very easily! I just never thought to look at that before now. Duh. 🙂
Just unblock it and you will be good to go!
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