In Windows 8 Pro, when installing a Cakewalk UA-25EX interface, the windows 7 driver installation freezes every time so don't even bother with it. I am just reporting that the vistaX64 driver works if you run it in compatibility mode for "vista (service pack 2)" and as "administrator". You can even leave the "Advanced Driver" switch set to on. I hope this helps others resolve this annoying issue.