i ever had this trouble, when i develop program using ADF in linux, in linux, all report that i build can be downloaded as PDF using method that i make in my JSPX program, after i change my OS, it, can't be downloaded anymore, the error log says : "Can not find subreport in /home/reports" try to check your parameter, if you use parameter subreport (not static), than should be a parameter named "SUBREPORT_DIR" in your report project, click parameter "SUBREPORT_DIR", than on the properties, change the Default Value Expression, Example, if you use windows, the default value expression should "D:\\project\\reports\\" change it to where you place your report in linux, ex : "//home//project//reports//" i hope it can help ypu solve your problem, :) regards Lukman