I still try to get printcal working. While executing printcal I get following messages: Average white = XYZ 0.000000 0.000000 0.000000, D50 Lab -0.000000 0.000000 0.000000 ./printcal: Warning - Chan 0, max DE point 0.000000 is below < 0.2 - ignored ./printcal: Warning - Chan 1, max DE point 0.000000 is below < 0.2 - ignored ./printcal: Warning - Chan 2, max DE point 0.000000 is below < 0.2 - ignored ./printcal: Warning - Chan 3, max DE point 0.000000 is below < 0.2 - ignored Chan 0 Dev max 0.152941, aDE Max 0.000000, aDE Min 0.000000 Chan 1 Dev max 0.152941, aDE Max 0.000000, aDE Min 0.000000 Chan 2 Dev max 0.152941, aDE Max 0.000000, aDE Min 0.000000 Chan 3 Dev max 0.152941, aDE Max 0.000000, aDE Min 0.000000 Absolute DE plot: Relative DE plot: ./printcal: Warning - rev: bwd vertex 0 is not prime or secondary (vflag = 0)(Check that your measurement data is sane!) Chan 0: rDE Max = 0.000000, rDE Min = 0.000000 What do the warnings mean? The ti3 file looks normal to me, measure data comes from a Caldera RIP: CTI3 DESCRIPTOR "Argyll Calibration Target chart information 3" ORIGINATOR "Argyll target" CREATED "Fri Mar 26 17:00:27 2010" KEYWORD "DEVICE_CLASS" DEVICE_CLASS "OUTPUT" KEYWORD "TARGET_INSTRUMENT" TARGET_INSTRUMENT "GretagMacbeth Spectrolino" KEYWORD "COLOR_REP" COLOR_REP "CMYK_XYZ" KEYWORD "SPECTRAL_BANDS" SPECTRAL_BANDS "36" KEYWORD "SPECTRAL_START_NM" SPECTRAL_START_NM "380" KEYWORD "SPECTRAL_END_NM" SPECTRAL_END_NM "730" KEYWORD "TOTAL_INK_LIMIT" TOTAL_INK_LIMIT "100" KEYWORD "SAMPLE_NAME" KEYWORD "SPEC_380" KEYWORD "SPEC_390" KEYWORD "SPEC_400" KEYWORD "SPEC_410" KEYWORD "SPEC_420" KEYWORD "SPEC_430" KEYWORD "SPEC_440" KEYWORD "SPEC_450" : : : KEYWORD "SPEC_670" KEYWORD "SPEC_680" KEYWORD "SPEC_690" KEYWORD "SPEC_700" KEYWORD "SPEC_710" KEYWORD "SPEC_720" KEYWORD "SPEC_730" NUMBER_OF_FIELDS 42 BEGIN_DATA_FORMAT SAMPLE_ID SAMPLE_NAME CMYK_C CMYK_M CMYK_Y CMYK_K SPEC_380 SPEC_390 SPEC_400 SPEC_410 SPEC_420 SPEC_430 SPEC_440 SPEC_450 SPEC_460 SPEC_470 SPEC_480 SPEC_490 SPEC_500 SPEC_510 SPEC_520 SPEC_530 SPEC_540 SPEC_550 SPEC_560 SPEC_570 SPEC_580 SPEC_590 SPEC_600 SPEC_610 SPEC_620 SPEC_630 SPEC_640 SPEC_650 SPEC_660 SPEC_670 SPEC_680 SPEC_690 SPEC_700 SPEC_710 SPEC_720 SPEC_730 END_DATA_FORMAT NUMBER_OF_SETS 84 BEGIN_DATA 1 "A1" 0.0000 0.0000 0.0000 0.0000 61.180 76.470 74.170 75.450 76.850 78.180 79.420 79.800 79.770 80.080 80.460 80.630 80.740 80.920 81.200 81.450 81.480 81.530 81.620 81.450 81.920 82.140 82.160 82.270 82.330 82.140 82.470 82.280 81.700 82.070 82.340 82.510 83.000 83.360 83.120 82.750 2 "A2" 4.7100 0.0000 0.0000 0.0000 53.720 67.150 67.050 68.460 69.680 71.020 72.480 73.100 73.130 73.470 74.030 74.360 74.290 73.810 73.060 72.140 70.960 69.710 68.270 66.560 65.690 65.270 65.350 65.820 66.200 66.300 67.180 68.500 70.570 74.090 77.270 79.440 81.020 81.990 82.190 82.190 3 "A3" 9.8000 0.0000 0.0000 0.0000 47.060 58.830 58.580 61.530 63.180 64.050 65.940 67.750 67.970 67.630 68.070 68.700 68.370 67.210 65.950 64.580 62.650 60.410 58.190 55.900 54.230 53.250 53.500 54.420 54.890 54.990 56.250 58.450 61.730 66.950 72.310 76.300 78.850 80.460 81.440 81.880 : : 300 4.2200 4.2200 4.2300 4.2500 4.3100 4.4000 4.5300 4.7100 4.9300 5.0600 5.1600 5.5300 6.3000 7.4600 8.9500 10.670 12.400 14.100 84 "D21" 0.0000 0.0000 0.0000 100.00 2.4700 3.0900 2.8100 2.8100 2.7400 2.6900 2.7800 2.8800 2.8800 2.8600 2.9300 3.0400 3.1300 3.2400 3.4200 3.6400 3.8400 4.0200 4.1300 4.1200 4.1000 4.1200 4.1900 4.2800 4.3700 4.5400 4.7800 4.9000 4.9700 5.3200 6.0600 7.1400 8.5100 10.120 11.780 13.380 END_DATA Can anybody help me? Regards KLaus