Connecting to Terada from ASP.NET in windows server 2008

When i am tring to connect teradata from asp.net application the following error i am getting in Window server 2008 same application is working fine in windows 7

[Date : 2012-11-14 14:25:19.1639 | level : ERROR | Message : MDOReportings.GetAvailableDMM => DataAccess.GetAvailableDMM => LogService.LogError |
StackTrace : (The type initializer for 'Teradata.Client.Provider.WpSession' threw an exception.
   at Teradata.Client.Provider.WpSession..ctor(UtlConnectionString connectionString)
   at Teradata.Client.Provider.Connection.Open(UtlConnectionString connectionString, UInt32 timeout)
   at Teradata.Client.Provider.ConnectionPool.CreateConnection(UInt32 timeout)
   at Teradata.Client.Provider.ConnectionPool.GetConnectionFromPool(Object owningObject)
   at Teradata.Client.Provider.ConnectionFactory.GetConnection(Object owningObject, UtlConnectionString connStr)
   at Teradata.Client.Provider.TdConnection.Open()
    type initializer for 'Teradata.Client.Provider.WpSession' threw an exception.]

Thanks,

Sanjeeva