小白求教 30分钟开发openerp视屏中的问题
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按照视屏中去模型中建完数据类型就出现如下提示: 
 Client Traceback (most recent call last):
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\http.py", line 204, in dispatch
 response["result"] = method(self, **self.params)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\controllers\main.py", line 1128, in call_kw
 return self._call_kw(req, model, method, args, kwargs)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\controllers\main.py", line 1120, in _call_kw
 return getattr(req.session.model(model), method)(*args, **kwargs)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\session.py", line 42, in proxy
 result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\session.py", line 30, in proxy_method
 result = self.session.send(self.service_name, method, *args)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\session.py", line 103, in send
 raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info)
 Server Traceback (most recent call last):
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\web\session.py", line 89, in send
 return openerp.netsvc.dispatch_rpc(service_name, method, args)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\netsvc.py", line 292, in dispatch_rpc
 result = ExportService.getService(service_name).dispatch(method, params)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\service\web_services.py", line 626, in dispatch
 res = fn(db, uid, *params)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\osv.py", line 190, in execute_kw
 return self.execute(db, uid, obj, method, *args, **kw or {})
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\osv.py", line 132, in wrapper
 return f(self, dbname, *args, **kwargs)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\osv.py", line 199, in execute
 res = self.execute_cr(cr, uid, obj, method, *args, **kw)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\osv.py", line 187, in execute_cr
 return getattr(object, method)(cr, uid, *args, **kw)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\base\ir\ir_model.py", line 185, in write
 return super(ir_model,self).write(cr, user, ids, vals, context)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\orm.py", line 4201, in write
 result += self._columns[field].set(cr, self, id, field, vals[field], user, context=rel_context) or []
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\fields.py", line 559, in set
 id_new = obj.create(cr, user, act[2], context=context)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\addons\base\ir\ir_model.py", line 359, in create
 self.pool.get(vals['model'])._auto_init(cr, ctx)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\orm.py", line 3028, in _auto_init
 self._m2m_raise_or_create_relation(cr, f)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\orm.py", line 3334, in _m2m_raise_or_create_relation
 self._save_relation_table(cr, m2m_tbl)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\osv\orm.py", line 2895, in _save_relation_table
 """, (relation_table, self._module))
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\sql_db.py", line 161, in wrapper
 return f(self, *args, **kwargs)
 File "E:\GreenOpenERP-7.0-latest-win-x86\openerp\sql_db.py", line 226, in execute
 res = self._obj.execute(query, params)
 ProgrammingError: operator does not exist: character varying = boolean
 LINE 5: AND ir_module_module.name=false
 ^
 HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
 7.0 8.0都会出现 求教是什么原因