Hello, We're not sure what is going wrong but it sounds like one of the window objects is not in a consistent state. Can you email me the project (gzipped tar, no spectra, and just me, not the list!)? Thanks, Wayne On Tue, 14 Sep 2010, Marie Tremblay wrote: > I was doing some backbone walk using the Assignment:Protein sequence assignment when i clicked on a spin system that generated this error: > > File "/Applications/ccpnmr/python2.6/lib/python2.6/lib-tk/Tkinter.py", line 1410, in __call__ > return self.func(*args) > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/AnalysisPopup.py", line 1385, in <lambda> > command = lambda selected=window: self.openWindow(selected) > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/AnalysisPopup.py", line 2595, in openWindow > popup = self.openPopup(popup_name, WindowPopup, window=window, location=location) > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/AnalysisPopup.py", line 1652, in openPopup > popup.open() > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/popups/WindowPopup.py", line 664, in open > self.updateAll() > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/popups/WindowPopup.py", line 655, in updateAll > self.setStripsSelector() > File "/Applications/ccpnmr/ccpnmr2.1/python/ccpnmr/analysis/popups/WindowPopup.py", line 998, in setStripsSelector > axisRegions = activeWindowPane.findFirstAxisPanel(label=self.window.stripAxis).sortedAxisRegions() > AttributeError: 'NoneType' object has no attribute 'sortedAxisRegions' > > I tried quitting the program and x11 then opening the project again but i get this error message box: Project invalid, please quit, fix, and re-start: AttributeError: 'None Type' object has no attribute 'axisregions' > > thanks, > Marie >