>>I too had this problem. The file was zipped so I right clicked on the zipped file and "unblocked" it then unzipped it and all was well
>
>At first, I right click on the ZIP file and that is why I was not able to see the Unblock option. When doing the same on the CHM file, I was able to resolve the issue.
>
>Thanks
Sorry, I should have said properties option on the right click menu.
Glad it worked out.
Trevor