Hi, I get an error message ('No X axis data in fitNo Y axis data in fit' in a pop-up) when I have done the fitting for one of my rates series (either T1 or T2) and then select the other in the rates measurements pop-up. This is followed by the traceback below. If I then click on 'Group Peaks' the program appears to do something (it shows the status bars for grouping resonances and calculating rates), but the table in the pop-up is not updated. I have to close and re-open the project to look at the second lot of data. When testing and trying to reproduce this error, it seemes that it only happens if the FitGraph window is open at the same time. Incidentally, is there a particular reason why the TC value and error are got rid of from the table when you look at the Fit Graph (e.g. using Show Funtion Fit button)? I like to look through all the fit graphs, but find it a bit odd that I then have to recalculate my values again before I store them in a file. Perhaps this is just a weird error that sneaked in, but if not, then I'd be interested to know the reasoning. Thanks, Vicky Traceback (most recent call last): File "/usr/lib64/python2.4/lib-tk/Tkinter.py", line 1345, in __call__ return self.func(*args) File "/usr/lib64/python2.4/lib-tk/Tkinter.py", line 456, in callit func(*args) File "/opt/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/CalcRatesPopup.py", line 1022, in update self.showFunctionFit(noOpen=True) File "/opt/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/CalcRatesPopup.py", line 453, in showFunctionFit graphTitle=title ) File "/opt/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/EditFitGraphPopup.py", line 259, in update self.errorLabel.set('Fit Error: %4f' % dataFitting.fitError) TypeError: float argument required -- **************************************************** Dr. Victoria A. Higman Leibniz-Institut fuer Molekulare Pharmakologie (FMP) NMR-Supported Structural Biology Robert-Roessle-Str. 10 13125 Berlin Germany Phone: +49-30-94793 223 E-mail: [log in to unmask] ****************************************************