The TimeSheet period was changed for the user and since then the user is unable to generate the TimeSheet period for the period Jun 22- Jul 5. We get an error: The TimeSheet cannot be generated for the period prior to July 6, 2014.
You probably have set the effective date of the Timesheet period to July 6, 2014. If that is the case a Timesheet would not be generated until July 6, 2014. For the user to generate a Timesheet for Jun 22- Jul 5, the Timesheet period should start on or before June 22.