Hello developers: While running the Network Anchoring tool I have got this: Exception in Tkinter callback Traceback (most recent call last): File "/usr/lib64/python2.4/lib-tk/Tkinter.py", line 1345, in __call__ return self.func(*args) File "/raid/Users/vitaliy/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/NetworkAnchoring.py", line 321, in runAnchoring nexus=nexus) File "/raid/Users/vitaliy/ccpnmr/ccpnmr1.0/python/ccpnmr/analysis/NetworkAnchoring.py", line 824, in networkAnchorAssign delta2 = abs(peakDims[hDims[1]].value - resonance2.findFirstShift(parentList=shiftList).value) AttributeError: 'NoneType' object has no attribute 'value' I will appreciate your help. I was also wondering if you could point me to the description of this tool. Thank you, Vitaliy