Problem with FezSpiderMainboardUpdater in Windows 7 64bits

I’m having a problem with FezSpiderMainboardUpdater.exe in Windows 7 64bits.

It tells me to set the dip switches to Loader mode and press reset, but after that my computer can’t recognize the Fez Spider. It shows up as unknown USB device and disabled. I have firmware
Any ideas?

You can direct your PC to the drivers directly. They are in the GHI folder

I tried to update to the drivers located in GHI NETMF Interface and GHI Bootloader Inrface folders under the USB Drivers folder. But the system said they were invalid. I tried reinstalling the SDK and repair the instalation but still have the driver problem.