SPException :Trial of Product expired error at Microsoft.Office.Server.UserProfiles.ProfileManagerBase.ValidateLicensing()

Hi I am getting trial product expired error when i want to open team site.only settings page can be opened rest of pages I am getting error and stack trace is Microsoft.Office.Server.UserProfiles.ProfileManagerBase.ValidateLicensing() If unchecked the user profile service application under service connections,manage web application in central admin,the error will not occur.But we want user profile service.I tried many ways like : to check the user profile synchronization is started in central admin and also the by creating new user profile service but still no luck.I am stuck with these error since 2 days please help me