Terry Hewitt wrote: > Just installed ArgyllCMS 1.3.4 > Trying to use it with my Color Munki photo. > System is Windows 7 64 bit. > I've installed the ArgyllCMS USB driver. (can see it correctly in Device > Manager). Hi, So it is listed under "Argyll LibUSB-1.0A devices" as "ColorMunki (Argyll)" ? > Run as administrator a command window and then when I run spotread -v -D4 > Connecting to instrument .. > Spotread: Error - Opening USB port 'usb:/bus0/dev2/ <X-Rite ColorMunki'> > config 1 > Failed <operation not supported or u unimplemented on this platform> > <Permissions ?> That doesn't look right. There should at least be a whole lot of: usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x1d6b, PID 0x2 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x2 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x2 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x1 Get config desc. 0 failed usb_check_and_add() called with VID 0x971, PID 0x2007 usb_check_and_add() found known instrument usb_check_and_add() called with VID 0x1d6b, PID 0x1 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x1 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x1 Get config desc. 0 failed usb_check_and_add() called with VID 0x1d6b, PID 0x2 Get config desc. 0 failed etc. Are you sure you posted the complete diagnostics ? Graeme Gill.