I am having trouble calibrating the colormunki in chartread. It works fine in spotread, and seems to give correct results. However I get "Calibration failed with 'Measurement misread' (White reference calibration didn't converge)" in chartread. The full trace is below. This was run on a Mac (10.6.2), but I get the same result under Windows XP. Any ideas? Thanks, Larry usb_get_paths about to look through buses: usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_check_and_add() called with VID 0x5ac, PID 0x21a usb_check_and_add() called with VID 0x971, PID 0x2007 usb_check_and_add() found known instrument usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_check_and_add() called with VID 0x5ac, PID 0x8005 usb_get_paths about to look through devices: usb_check_and_add() called with VID 0x5ac, PID 0x8006 usb_check_and_add() called with VID 0x5ac, PID 0x8501 munki: About to init coms munki: About to init USB icoms: About to set usb port characteristics icoms: About to open the USB port icoms: USB port needs opening icoms: About to open USB port 'usb:/bus29/dev0 (X-Rite ColorMunki)' icoms: USB port is now open icoms: Clearing any USB errors icoms: usb port characteristics set ok munki: init coms has suceeded munki: About to init instrument munki: GetFirmParms GetFirmParms returns fwrev 1.32, tickdur 32, minint 224, eeblks 2, eeblksz 8192 ICOM err 0x0 munki: GetChipID GetChipID returns 01-826d8d12000005 ICOM err 0x0 munki: GetVersionString GetVersionString returns 'colormunki FW V1.32 Build Nr. 1303' ICOM err 0x0 munki: Read EEProm address 0x4 size 0x4 Read 0x4 bytes, ICOM err 0x0 munki: Read EEProm address 0x0 size 0x1fe9 Read 0x1fe9 bytes, ICOM err 0x0 Normal non-lin = 0.000000 1.008973 -0.000001 0.000000 High Gain non-lin = 0.000000 0.206501 -0.000001 0.000000 munki: Read 8 bytes from switch hit port munki: SetIndLED 1000, 0, 0, -1, 0, 0xb5d5af0c SetIndLED got ICOM err 0x0 munki: SetIndLED 0, 0, 0, 0, 0, 0x00 SetIndLED got ICOM err 0x0 inst_handle_calibrate called About to call calibrate at top of loop munki: GetStatus GetStatus Sensor pos. Calibration, Button state Released, ICOM err 0x0 Set instrument sensor to calibration position, and then hit any key to continue, or hit Esc or Q to abort: About to call calibrate at top of loop munki: GetStatus GetStatus Sensor pos. Calibration, Button state Released, ICOM err 0x0 munki: TriggerMeasure lamp 0, scan 0, gain 0, intclks 224, nummeas 70, 0x1455f5 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 70, scanflag 0, address 0x81b000 bsize 0x4aec about to call usb_read with 19180 bytes Read 70 readings, ICOM err 0x0 (Trig & rd times 1 11 516 11) Execution time of dark calib time 0.007168 sec = 528 msec munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 392, nummeas 80, 0x18017c0 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 80, scanflag 0, address 0x81fc00 bsize 0x55a0 about to call usb_read with 21920 bytes Read 80 readings, ICOM err 0x0 (Trig & rd times 2 0 1092 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0xbfffd1b8 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x1041400 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 1 0 629 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0x1000000 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x1041400 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 2 0 629 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0x1000000 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x825200 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 1 0 629 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0x1000000 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x825200 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 2 0 629 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0x1000000 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x1041400 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 2 0 629 0) munki: TriggerMeasure lamp 1, scan 0, gain 0, intclks 224, nummeas 84, 0x1000000 TriggerMeasure got ICOM err 0x0 munki: Read measurement results: inummeas 84, scanflag 0, address 0x1041400 bsize 0x59e8 about to call usb_read with 23016 bytes Read 84 readings, ICOM err 0x0 (Trig & rd times 2 0 628 0) White calibration failed - didn't converge Calibration failed with 'Measurement misread' (White reference calibration didn't converge) _______________________ Larry Gebhardt larry@xxxxxxxxxxxxx