Export SSRS 2005 throws exception "Unable to cast object of type"

When i try to export a SSRS 2005 report to word with ASPOSE.Words I get the following error:

Unable to cast object of type 'Aspose.Words.ReportingServices.DocRenderer' to type 'Microsoft.ReportingServices.ReportRendering.IRenderingExtension'.

Does anyone know what to do about this error??????

Hi Rich,

Thanks for your query. It would be great, If you share your RDL file along with data source for investigation purposes.