title: cannot load sub-report after setting SUBREPORT_DIR > default value expression
body: <p>i have create one report that contain subreport. everything goes fine before i set the default value expression at SUBREPORT_DIR. There is no problem during compilling but when i tried to view using iReport, it appear error filling print. And when i try to load it from jsp, it said error loading object caused by : java.io.StreamcorruptedExecption : invalid stream header: 3C68746D.</p>