Reporting service ,Operation is not valid due to the current state of the object

Reporting service ,Operation is not valid due to the current state of the object
Resolve :  http://www.sqlservercentral.com/Forums/Topic692785-147-1.aspx#bm1240909

By Sandy Westman Error ใน Reporting service : กรณี Long run parameter ทำให้เกิด  Error ให้เปิด config file แล้ว Add key  C:\Program Files\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportManager.