Hello, I am getting the same error. I do have the jasperreports .jar file in the classpath. I understand Tomcat is not finding the jasperreports compiler but can you give me any pointers on which setup I might be missing? The jasperreports works fine in Eclipse environment (where I am using JasperAssistant to preview the report). But when I use a servlet to display the report in pdf in the browser, I get this error. Any help will be greatly appreciated. Thanks, Nicky