[xwiki-devs] Export page with history as XAR which includes histories

Hi, I am trying to export page with its histories as XAR. I referred to this document: http://platform.xwiki.org/xwiki/bin/view/Features/Exports and used the following URL: https://SERVER/xwiki/bin/export/Space/Page?format=xar&pages=Main.testpa… , where SERVER is my server name and testpage is the page with history that I am tryin to export as XAR. This command did not work. I am seeing message "A problem occurred while trying to process your request. Please contact the webmaster if this happens again." on the page and status 304 (Not Modified) on the browser. Can someone please let me know how I can export a page with histories as XAR which includes all its history information? Thanks, Amrita