Traceback (most recent call last):
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/__init__.py", line 1791, in handle_input
    _, out_data = self.execute( trans, incoming=params, history=history )
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/__init__.py", line 2116, in execute
    return self.tool_action.execute( self, trans, incoming=incoming, set_output_hid=set_output_hid, history=history, **kwargs )
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/actions/upload.py", line 20, in execute
    uploaded_datasets = upload_common.get_uploaded_datasets( trans, '', incoming, precreated_datasets, dataset_upload_inputs )
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/actions/upload_common.py", line 222, in get_uploaded_datasets
    data = new_upload( trans, cntrller, uploaded_dataset, library_bunch, history=history )
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/actions/upload_common.py", line 214, in new_upload
    return new_history_upload( trans, uploaded_dataset, state, history=history )
  File "/home/john/workspace/galaxyp-central/lib/galaxy/tools/actions/upload_common.py", line 117, in new_history_upload
    sa_session = trans.sa_session )
  File "<string>", line 4, in __init__
  File "/home/john/workspace/galaxyp-central/eggs/SQLAlchemy-0.5.6_dev_r6498-py2.7.egg/sqlalchemy/orm/state.py", line 82, in initialize_instance
    return manager.events.original_init(*mixed[1:], **kwargs)
  File "/home/john/workspace/galaxyp-central/lib/galaxy/model/__init__.py", line 1380, in __init__
    self.history = history
  File "/home/john/workspace/galaxyp-central/eggs/SQLAlchemy-0.5.6_dev_r6498-py2.7.egg/sqlalchemy/orm/attributes.py", line 150, in __set__
    self.impl.set(instance_state(instance), instance_dict(instance), value, None)
  File "/home/john/workspace/galaxyp-central/eggs/SQLAlchemy-0.5.6_dev_r6498-py2.7.egg/sqlalchemy/orm/attributes.py", line 590, in set
    value = self.fire_replace_event(state, dict_, value, old, initiator)
  File "/home/john/workspace/galaxyp-central/eggs/SQLAlchemy-0.5.6_dev_r6498-py2.7.egg/sqlalchemy/orm/attributes.py", line 610, in fire_replace_event
    value = ext.set(state, value, previous, initiator or self)
  File "/home/john/workspace/galaxyp-central/eggs/SQLAlchemy-0.5.6_dev_r6498-py2.7.egg/sqlalchemy/orm/attributes.py", line 847, in set
    new_state,  new_dict = instance_state(child), instance_dict(child)
  File "/home/john/workspace/galaxyp-central/lib/galaxy/web/framework/__init__.py", line 1128, in __getattr__
    if key not in self: raise AttributeError, key
AttributeError: _sa_instance_state