When you install QV Desktop there are a number of Extension examples that are put on your harddrive. Look for files with a .qar-extension and dubbelclick on them to install them for the desktop edition.
The Extensions can then be used when using Webview from within QV Desktop. If you want to examine the qvpp-files they are installed below the Extension-root folder. The path differs depending on the OS you are using so the easiest way is probably to do a search for qvpp-files on your disk.
Also, if you like you can post your Extension+document here on the forum and I can take a look at it?
Also, you may not have encountered the problem but you should note that there is a bug in qvpp processing: html code inside comments are seen as normal code by qlikview, and the file won't be loaded if the html code is not well formed.