I have a script task in the control flow where in I am connecting to the database (SQL Server 2005) and executing a SQL Statement. This was working, now when I try to change the package the script task fails with the following error:

Something Bad Happen Unable to cast COM object of type System.__ComObject to class type System.Data.SqlClient.SqlConnection. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface.


The connection manager that I have created and I am using is a ADO .NET connection manager so that should not be the issue. Any inputs on resolving this will be much appreciated.

Thanks,

Monisha

Would be worth to check what service pack you have for SQL 2005, There were a few issues with SSIS 2005 and MS came out with a bunch of hot fixes for them in their service packs,
Could be found at -
http://support.microsoft.com/?id=955706

In addition,on the Script Task check for the PreCompile to be False if you are on Service Pack 1 or something.