Solution :
Manual migration script to run on DB :
ALTER TABLE ir_model_fields ADD column serialization_ field_id int references ir_model_fields on delete cascade;
Server Traceback (most recent call last): File "/home/pna/workspace/6.1/web/addons/web/common/http.py", line 593, in send return openerp.netsvc.dispatch_rpc(service_name, method, args) File "/home/pna/workspace/6.1/server/openerp/netsvc.py", line 360, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/home/pna/workspace/6.1/server/openerp/service/web_services.py", line 397, in dispatch return fn(*params) File "/home/pna/workspace/6.1/server/openerp/service/web_services.py", line 408, in exp_authenticate res_users = pooler.get_pool(db).get('res.users') File "/home/pna/workspace/6.1/server/openerp/pooler.py", line 50, in get_pool return get_db_and_pool(db_name, force_demo, status, update_module)[1] File "/home/pna/workspace/6.1/server/openerp/pooler.py", line 33, in get_db_and_pool registry = RegistryManager.get(db_name, force_demo, status, update_module, pooljobs) File "/home/pna/workspace/6.1/server/openerp/modules/registry.py", line 180, in get update_module, pooljobs) File "/home/pna/workspace/6.1/server/openerp/modules/registry.py", line 202, in new openerp.modules.load_modules(registry.db, force_demo, status, update_module) File "/home/pna/workspace/6.1/server/openerp/modules/loading.py", line 298, in load_modules loaded_modules, processed_modules = load_module_graph(cr, graph, status, perform_checks=(not update_module), report=report) File "/home/pna/workspace/6.1/server/openerp/modules/loading.py", line 167, in load_module_graph models = pool.load(cr, package) File "/home/pna/workspace/6.1/server/openerp/modules/registry.py", line 109, in load res.append(cls.create_instance(self, cr)) File "/home/pna/workspace/6.1/server/openerp/osv/orm.py", line 919, in create_instance obj.__init__(pool, cr) File "/home/pna/workspace/6.1/server/openerp/osv/orm.py", line 1027, in __init__ if field['serialization_field_id']: KeyError: 'serialization_field_id'