According to the following compatibility website, the VPkeys program isn't developed to run on Windows 8. The developer's website isn't accessible and the product might be discontinued. If this is true, it will not receive any compatibility update that can facilitate the use on Windows 8. To fix this issue, I strongly suggest that you use the Software Informer's database in order to find another tool, similar to this one, that is fully compatible with Windows 8. I suggest that you take a look at the tool developed by Google. To learn more about this, check its official website.