Hi,
the document you found is obsolote (it was for original ORMD v1). ORM Designer now works correctly on Ubuntu without wine emulation.
It's strange that you're getting segmen violation error. Could you please try to re-download ORM Designer if you don't have an error in zip package?
If re-download doesn't help, could you please try to download some of the older versions? For example version 2.1.8.688.
Please let me know if some of this advices help you.