Hi, In the Peak Separator interface the following happened to me: I selected a region with one peak in my spectra to apply the Peak Separator to. When I thereafter pressed [Separate Peaks], Analysis crashed and died. I got the following message in the python prompt: *** Bayesian Peak Separator started *** *** N Peaks - Cool - N Iter - Likelihood /Applications/ccpnmr/bin/analysis: line 9: 1657 Segmentation fault ${CCPNMR_TOP_DIR}/python2.6/bin/python2.6 -i -O ${CCPNMR_TOP_DIR}/ccpnmr2.1/python/ccpnmr/analysis/AnalysisGui.py $* /Mattias ****************************************************** Mattias Brink, M.Sc. Scientific assistant, UAB "Spronk NMR Consultancy" Pilies gatvÄ— 24 LT-01123, Vilnius Lithuania E [log in to unmask] W www.spronknmr.eu W training.spronknmr.eu ******************************************************