Error: Cannot find the ODA dataSource extension

Hey All,
I am trying to get a simple report to run from a standalone java application with ME 8.5 and BIRT 2.5.2 and cannot get past the following error when running the report:

java.lang.IllegalArgumentException: Cannot find the ODA dataSource extension (com.genuitec.eclipse.reporting.oda).
 Check the workspace log file for any problems with loading the extension bundle and its dependencies.
    at org.eclipse.datatools.connectivity.oda.util.manifest.ManifestExplorer.getExtensionManifest(ManifestExplorer.java:200)

I have added the ME Report Web Libraries, put the BIRT Runtime in the path specified in the code, added the oracle driver to the ReportEngine\plugins\org.eclipse.birt.report.data.oda.jdbc_2.5.2.v20100205\drivers as indicated by things I could find on the problem.

The code I am using is as follows:

IReportEngine engine = null;
EngineConfig config = null;

config = new EngineConfig( );     
config.setBIRTHome("E:/Development/birt-runtime-2_5_2/ReportEngine");
config.setLogConfig("E:/temp", java.util.logging.Level.FINEST);
Platform.startup( config );

IReportEngineFactory factory = (IReportEngineFactory) Platform
.createFactoryObject( IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY );
engine = factory.createReportEngine( config );    

IReportRunnable design = null;
design = engine.openReportDesign("E:/temp/user_obj.rptdesign"); 
IRunAndRenderTask task = engine.createRunAndRenderTask(design);     

PDFRenderOption options = new PDFRenderOption();
options.setOutputFileName("E:/temp/user_obj.pdf");
options.setOutputFormat("pdf");

task.setRenderOption(options);
task.run();
task.close();
engine.destroy();

The report does output the headers of the design to the PDF, but the error stops any data.

My real need is to be able to save a report problematically to a PDF file on disk from a Tomcat web application, but can’t find any examples on how to do that so starting with just a simple java app, but not getting anywhere.

Any help would be greatly appreciated,
Ed