Hi The FormatConverter Crash when it is started from inside analysis is definitely an OpenGL problem as I can work around it by closing the spectrum window before opening FormatConverter and importing the peak list. Additionally Wayne can't reproduce it but Andy and Nicola can. Perhaps this is a(nother) Nvidia specific problem - has anyone seen this using other graphics cards? Huw -- Huw Jenkins School of Chemistry The University of Edinburgh Edinburgh EH9 3JJ 0131 650 4704 [log in to unmask]