Hi Letizia, Thanks for reporting the problem, though next time you might want to use the Report a Bug menu item (in the help menu). Anyway, I will get a fix in but there's a pretty easy workaround until then: don't blank out the "plane name" when you create the plane. Give it some actual name (or use the default). Just don't blank it! --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu On Feb 3, 2015, at 9:48 AM, Letizia Meregalli <letizia.meregalli@tum.de> wrote:

Hi, I have a tRNA molecule and I would like to measure the angles between two nitrogenous bases. I created two planes, each for each base. When I select both planes, in order to measure the angles between them (Structure Measurements Axes/Planes/Centroids) I get following message:

<type 'exceptions.UnboundLocalError'> Exception in Tk callback Function: <bound method SortableTable._browseCmd of <CGLtk.Table.SortableTable instance at 0x117990638>> (type: <type 'instancemethod'>) Args: ('1',) Traceback (innermost last): File "/Applications/Chimera.app/Contents/Resources/lib/python2.7/site-packages/Pmw/Pmw_1_3/lib/PmwBase.py", line 1747, in __call__ return apply(self.func, args) File "/Applications/Chimera.app/Contents/Resources/share/CGLtk/Table.py", line 1043, in _browseCmd self.userBrowseCmd(self.selected()) File "/Applications/Chimera.app/Contents/Resources/share/StructMeasure/Geometry.py", line 268, in _tableCB self.feedback(sels) File "/Applications/Chimera.app/Contents/Resources/share/StructMeasure/Geometry.py", line 113, in feedback diff = " ".join(words2[i:]) <type 'exceptions.UnboundLocalError'>: local variable 'i' referenced before assignment

UnboundLocalError: local variable 'i' referenced before assignment

File "/Applications/Chimera.app/Contents/Resources/share/StructMeasure/Geometry.py", line 113, in feedback diff = " ".join(words2[i:])

See reply log for Python traceback.

I really don’t know how can I solve this problem.. I’d be really grateful if you could help me or give me some hints! thank you a lot

Letizia _______________________________________________ Chimera-users mailing list Chimera-users@cgl.ucsf.edu http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users