You will need to install the actual application to be able to set up a virtual location for Bluestacks. However, I have installed the available Fake GPS applications and the result was the same. I have been using the latest version of the Bluestacks application. The Maps application's background is just a dark screen. Try installing an older version of the Bluestacks application through the XDA Wiki page. You can browse to the page using Google Search. Download an older version, remove the current one and then repeat the installation steps.