some fixes and dead code discovered?

src/amuse/datamodel/base.py

@@ -1702,6 +1702,9 @@ def to_print_list(self):
                 result.append(type(x))
 
         return result
+
+# this class seems not to be used at all
+# in fact it is not clear what it is...
 class FixedLinkedArray(LinkedArray):
     """Links between particles and particle sets are stored in LinkedArrays.
     """
@@ -1735,7 +1738,10 @@ def copy_with_link_transfer(self, from_container, to_container, must_copy = Fals
             memento = dict()
 
         if must_copy:
-            new_container = x.copy(memento, keep_structure = True, filter_attributes = filter_attributes)
+            raise Exception("unfixed syntax error")
+            # the following needs to be tested
+            # was new_container = x.copy(memento, keep_structure = True, filter_attributes = filter_attributes)
+            new_container = from_container.copy(memento, keep_structure = True, filter_attributes = filter_attributes)
         else:
             if from_container is None or self.linked_set is from_container:
                 new_container = to_container

src/amuse/rfi/async_request.py

@@ -263,10 +263,6 @@ def __init__(self, first, second, operator):
             self.parent=first
         self.request=FakeASyncRequest()        
         self.result_handlers = []
-        try:
-            self._result_index=first._result_index[index]
-        except:
-            self._result_index=None
 
     def result(self):
         self.wait()