If module is not upgrade in OpenERP, later on error will came while you upgrading any module.
Or in other words we can say that, while upgrading module in OpenERP we faces error and every-time false to upgrade module, so to solve this issue follow the below step.
then use this below command in pgadmin also the same command/query in open database
update ir_module_module set state='installed' where state='to upgrade';
And then restart server and then upgrade module in OpenERP.
Use this Query it will be very helpful to solve this Error.
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