Microsoft报表查看器不显示任何报表

I am working on a small windows application. The application needs to show some reports. For each report, I made a simple form with Report Viewer control. When the form shows up, I call the RefreshReport() method and the report is shown. My problem is this - one report does not show up at all. I get only form with empty ReportViewer control. There is also no "Generating report" message. The query I use returns the correct data, but I am unable to get anything when I run the application. For each of the reports, I am using separate dataset. In each DtaSet I have placed the tables I want to use in corresponding report. I I have also tried to create this particular report using Report Server Project Wizard (Business Intelligence Project > Report Server in Visual Studio). It showed the report correctly. I used exactly the same settings, same query, everything is identical. What could be the problem? Why is Visual Studio unable to show me this report? The other reports are working fine. I am working on a small windows application. Th