Hello. I'm working with SQL2005 and Reporting2005, I've created some report and I had published on a report server everything works ok, the thing is that I've tried open the reports with the report builder and shows me this error message. Microsoft.ReportingServices.ReportBuilder.ReportModel.Report: The operation you are attempting on item "/Data Sources/Fis_Datasource" is not allowed for this item type. ---> The operation you are attempting on item "/Data Sources/Fis_Datasource" is not allowed for this item type. I already have configured the datasource and the model was created, but I don't know why I can't open the report. Hope that someone can helpme with this