After driver installation, you just have to be sure that everything installed properly. Reboot the PC and then go to Device Manager (Start > Run > devmgmt.msc) and look through the available devices. No item should be displayed with yellow exclamation mark or a red X.
If everything is OK, launch the application then go to the Settings menu and make it the default app and try to connect again.
If it's not working, then obtain a new driver from the developer's website and install it over the current one.