some corrections

tiramisu/error.py

@@ -118,6 +118,7 @@ class PropertiesOptionError(AttributeError):
                                         self._name,
                                         prop_msg,
                                         msg))
+        else:
             self.msg = str(_('cannot access to {0} "{1}" because has {2} {3}'
                              '').format(self._opt_type,
                                         self._name,

tiramisu/setting.py

@@ -518,11 +518,11 @@ class Settings(object):
                         # transitive action, add action
                         if operator != 'and':
                             if readable:
-                                for msg in self.apply_requires(err.path,
-                                                               err.requires,
-                                                               err.index,
+                                for msg in self.apply_requires(err._path,
+                                                               err._requires,
+                                                               err._index,
                                                                True,
-                                                               err.config_bag).values():
+                                                               err._config_bag).values():
                                     calc_properties.setdefault(action, []).extend(msg)
                             else:
                                 calc_properties.add(action)