This is usually a mapping conflict. Ensure you don't have multiple mappings active for the same controller in the settings menu. Delete any "User" mappings if the "Factory" one is available. Key Features of the Mixtrack Pro 2 in VDJ
Once you have a baseline mapping, why not tweak it yourself? Virtual DJ uses a simple scripting language. i--- Numark Mixtrack Pro 2 Virtual Dj Mapping Download
You installed the file, but the controller is dead. Here is why. This is usually a mapping conflict