Burning multisession CD on Linux?

Hello SuSE folkz, Could somebody please advise an application or method how to burn multisession CD's on Linux. In our Eng. Dept. we're using XCDRoast but it appears that it allows to burn only a single session CD's. We did try to unblank the last session, on order to add some more data tracks on the same CD. We experimented with re-writable and regular CD's. XCDRoast unblanks it and writes additional tracks, but exits with an error. CD becomes unreadable. Since storing our research data is a very crutial matter any your advise on this subject is a very appreciated. Thank you in advance Alex