Hi, I was trying to convert basic CGATS files to the ti3 format, but I get an error message about 'unknown file or corrupted file'. Which tags are needed at least in the CGATS file for a conversion to ti3? My input files look like ------------ RGB.txt ----------- BEGIN_DATA_FORMAT RGB_R RGB_G RGB_B END_DATA_FORMAT BEGIN_DATA 255.000 255.000 255.000 [more data...] END_DATA --------------------------------- ----------- XYZ.txt ---------- BEGIN_DATA_FORMAT XYZ_X XYZ_Y XYZ_Z 91.467 99.568 106.974 [more data...] END_DATA_FORMAT BEGIN_DATA ------------------------------ and the used command line was: txt2ti3.exe -d RGB.txt XYZ.txt monitormeasurement I tried adding a SAMPLE_ID (in RGB.txt) and SAMPLE_NAME (in XYZ.txt) field, but that did not solve the problem. Best regards Peter