Unfortunately it's a security restriction of Google Chrome. It will not load our extension when loading a local file. We have been looking but so far have not found a way to overcome this Google Chrome security restriction. There is no exposed security setting that we have found that we can set to allow our extension to load in this scenario.
The workaround here is to install IIS ( Internet Information Services) on your machine and place the file into the IIS documents folder: C:\inetpub\wwwroot. Then all you need to do is navigate to http://localhost/PageWeb.htm
You can install it from Control Panel\All Control Panel Items\Programs and Features => Turn windows fetures on or off (see the attached screen shot).
Let me know if this helps.
the Telerik team