Graeme, Thanks to you and the others for this great work! RE: Beta V_1.1.0-win32 OS: Windows 7 x64 When I attempt to install the Colormunki driver (from libusbw), Win7 x64 installs the following driver files and then complains that the driver is incorrect for the OS: It appears that the 32-bit versions of libusb0.sys and libusb0.dll are being installed rather than the 64-bit versions. Could the .inf be revised to cure this problem? (Sorry, not sure how to do that myself.) Please note that I have a work-around for the driver not being signed. Many thanks, Bruce Bruce E. Houston, Patent Attorney