Glad to here LibUsbDotNet is working well for you!
Interesting fix, does this cause any problems when run along side a C# usb application that uses true 64 bit mode?
Regards,
Travis.
Future versions of LibUsbDotNet will support both Linux and Windows operating systems. It will require the Mono 2.0 runtime and libusb 1.0.x usb driver. This new version of LibUsbDotNet is scheduled for release on Dec. 15. 2009.