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rror Type: <type 'exceptions.TypeError'> 
Error Value: 'NoneType' object is unsubscriptable 
  File : /usr/lib/entropy/spritz/spritz.py , line 1302, in <module>
    mainApp = SpritzApplication() 
  File : /usr/lib/entropy/spritz/spritz.py , line 865, in __init__
    self.setupSpritz() 
  File : /usr/lib/entropy/spritz/spritz.py , line 1010, in setupSpritz
    self.addPackages() 
  File : /usr/lib/entropy/spritz/spritz.py , line 1128, in addPackages
    pkgs = self.etpbase.getPackages(flt) 
  File : /usr/lib/entropy/spritz/packages.py , line 128, in getPackages
    return self.doFiltering(self.getRawPackages(flt)) 
  File : /usr/lib/entropy/spritz/packages.py , line 174, in getRawPackages
    self.populatePackages([flt]) 
  File : /usr/lib/entropy/spritz/packages.py , line 78, in populatePackages
    self._packages[flt] = [p for p in self._getPackages(flt)] 
  File : /usr/lib/entropy/spritz/packages.py , line 206, in _getPackages
    updates, remove, fine = self.Entropy.calculate_world_updates() 
  File : /usr/lib/entropy/libraries/entropy.py , line 1717, in calculate_world_updates
    match = self.atomMatch(myscopedata[0]) 
  File : /usr/lib/entropy/libraries/entropy.py , line 840, in atomMatch
    query = dbconn.atomMatch(atom, caseSensitive = caseSensitive, matchSlot = matchSlot, matchBranches = matchBranches, packagesFilter = packagesFilter, matchRevision = matchRevision) 
  File : /usr/lib/entropy/libraries/databaseTools.py , line 4114, in atomMatch
    foundCat = self.retrieveCategory(results[0][1]) 
  File : /usr/lib/entropy/libraries/databaseTools.py , line 2430, in retrieveCategory
    cat = self.cursor.fetchone()[0]