Dear Mark, The version on my computer has this particular bug fixed. Hopefully that means that an update has been posted. Have you tried making sure that you are up-to-date with the patches? YOurs, Rasmus --------------------------------------------------------------------------- Dr. Rasmus H. Fogh Email: [log in to unmask] Dept. of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK. FAX (01223)766002 On Mon, 4 Aug 2008, Mark Pfuhl wrote: > I am sure I did this before, but now all of a sudden it is not working > anymore. I do the rates analysis, get nice data, the fits are looking good, > there seems to be no problem but when I hit the button the "Make T1 List" ( > same for T2) I get this error message: > > Exception in Tkinter callback > Traceback (most recent call last): > File "/usr/local/ccpnmr/python2.4/lib/python2.4/lib-tk/Tkinter.py", line > 1345, in __call__ > return self.func(*args) > File > "/usr/local/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/CalcRatesPopup.py", line > 826, in makeRatesList > values, errors=errors) > File > "/usr/local/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/DataAnalysisBasic.py", > line 208, in makeRatesList > if isotope0 in peakDim2.dataDim.expDim.findFirstExpDimRef().isotopeCodes: > AttributeError: 'NoneType' object has no attribute 'isotopeCodes' > > I am running version 1.0.15 on Centos 5 with python 2.4.4. > Any suggestions welcome, > mark >