PDF Export not working in smartgwtpro-5.0p lib but in smartgwtee-5.0pits working fine

Hi guys,

I am using smartgwtpro-5.0p license version for my application to use PDF export feature of isomorphic_contentexport.jar
(smartgwtpro-5.0p 17kb) package but its not working.
The same code is working for me if i use isomorphic_contentexport.jar
(smartgwtee-5.0p size 16kb)

exportButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {

DSRequest requestProperties = new DSRequest();
requestProperties.setAttribute("skinName", "Enterprise");
requestProperties.setAttribute("pdfName", "Summary Report");
RPCManager.exportContent(summaryLayout, requestProperties);

}
});

2. Mozzila FireFox 24.0

Please suggest for the same.