Friends,

I want to define solvent accessibility as the attribute to create a worm representation. I used the template file 'percentExposed.txt' in the following link to create an attribute file. The sample file i creased is attached (exp.txt)

http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/defineattrib/percentExposed.txt

when i give the command: deffattr exp.txt
I get the following error. How to resolve the problem.

Traceback (most recent call last):
  File "/usr/local/chimera_15/lib/python2.6/site-packages/Pmw/Pmw_1_3/lib/PmwBase.py", line 1747, in __call__
    return apply(self.func, args)
  File "/usr/local/chimera_15/share/Midas/midas_ui.py", line 260, in processCommand
    midas_text.makeCommand(text)
  File "/usr/local/chimera_15/share/Midas/midas_text.py", line 66, in makeCommand
    f(c, args)
  File "/usr/local/chimera_15/share/AddAttr/ChimeraExtension.py", line 33, in cmdAddAttr
    specInfo=[("spec", "models", "molecules")])
  File "/usr/local/chimera_15/share/Midas/midas_text.py", line 424, in doExtensionFunc
    extFunc(*tuple(processedArgs), **kw)
  File "/usr/local/chimera_15/share/AddAttr/__init__.py", line 77, in addAttributes
    return _addAttr(attrFile, models, log, raiseTool)
  File "/usr/local/chimera_15/share/AddAttr/__init__.py", line 239, in _addAttr
    from ShowAttr import ShowAttrDialog, screenedAttrs
ImportError: cannot import name screenedAttrs
ImportError: cannot import name screenedAttrs

  File "/usr/local/chimera_15/share/AddAttr/__init__.py", line 239, in _addAttr
    from ShowAttr import ShowAttrDialog, screenedAttrs

<exp.txt>