Please find below mentioned error message
j2ee Compilation.
Internal Error
Compilation Error.
referencesProxy\Extension_JasperReports_proxy.cs(27,29): error CS0234: The type or namespace name 'NssJasperReports' does not exist in the namespace 'OutSystems' (are you missing an assembly reference?)
protected static OutSystems.NssJasperReports.IssJasperReports issJasperReports =(OutSystems.NssJasperReports.IssJasperReports)new OutSystems.NssJasperReports.CssJasperReports();
Regards
Ryoto-Oh