I download Virtual TreeView from https://www.jam-software.com/virtual-treeview/ . After I open the HTML Help inside it, I get a warning, then I proceed and will see the table of contents in the left panel, I can also search in the help. However, whenever I try to click the item in the left panel, there are nothing appear in the left panel. What I can see is just a white background. This problem only occurs in Windows 7.
I try to open the same HTML help in WIndows XP, then I will be able to see the content in the right panel.
Why?
The solution can be found in Opening a CHM file produces: "navigation to the webpage was canceled" . I try to unblock the file and then be able to view the contents.