ReportingService2005.CreateReport() Warning...

I am using Reporting Services 2005 on SQL Express with Advanced Services...

I am dipping into the SOAP API and trying to add DataSources and Reports dynamically, as is how I would like to be able to deploy them...

My problem is this:

I have a shared datasource and a report that were deployed to the server via the 'Deploy' method in VSTS...I can access that report just fine, and it obviously uses the shared datasource...

Next, I copy the .rdl file of the report I already deployed and give it another name ("NewReport.rdl"). What I want to do is add this report to the server (it's an exact copy of the functioning report with a different report name). This report should use the same shared datasource as the other report.

Here is my code:

ReportingService2005 rs = new ReportingService2005();
rs.Credentials = System.Net.CredentialCache.DefaultCredentials;

Byte [] reportDefinition = /* read in the rdl file and create byte array out of it (didn't want to paste this code, cuz you don't care...trust me, it's correct */

ReportingTest.localhost.Warning [] warnings = rs.CreateReport("NewReport", "/ReportServerTest", true, reportDefinition, null);

foreach (ReportingTest.localhost.Warning warning in warnings)
{
Console.WriteLine(warning.Message);
}


The report is added to the server just fine, but I receive this 1 warning:

Code: "rsDataSourceReferenceNotPublished"
Message: "The data set €˜AdventureWorksTestDataSource€™ refers to the shared data source €˜AdventureWorksTestDataSource€™, which is not published on the report server."

And then when I try to view the report, I get this exception:

"The report server cannot process the report. The data source connection information has been deleted. (rsInvalidDataSourceReference)"

I know that the datasource is there, because the other report still works just fine...and I am adding an exact COPY of that report's RDL to the server, so it SHOULD work, IMO...

Any word on this?...I haven't been able to find much on this error...they say that an 'rsInvalidDataSourceReference' is usually caused when the datasource doesn't exist on the server when the report is deployed...or the datasource is deleted after the report has been deployed, but this is not true in my case...

Thanks for any feedback!!

Russ