Cura will also not produce .x3g files needed for your printer. The best option is to search for Makerbot desktop 2.4, the last version with a useful update for this printer.
Flashforge has also released a compatible slicer by selecting the creator 4 series. https://groups.google.com/forum/m/#!topic/flashforge/v9SW5XiqlfA.
https://www.dropbox.com/s/vpli9gpsxr4nywm/Makerware.zip?dl=0 desktop 2.4