It should run without a problem. I'm running it on Windows 8, 64 bit.
Try this:
Turn off FS.
Uninstall the FS package from the Windows control panel: Programs and Features.
Reboot the computer.
Go to Presonus and get the latest version (I think 1.2)
Reinstall the software with the FS OFF. Don't turn on the FS yet.
Reboot the computer. Wait for the computer to be completely booted up.
Turn on the FS. You should get the Windows "found new hardware" messages.
Let me know what happens.