Hi Eric. I just checked and it definitely appears to be a problem with KNTR in 31DEC06 - 31DEC05 works fine. I run JMFIT on an image, writing out a MF extension and then convert this to ST format with mf2st. The contour plotting in KNTR works fine, but there is no model component plotted. As soon as I change to version 'new' a component appears. I hope this helps. Andy