Corel Designer 2018 crash on File menu

I have just installed CorelDRAW Technical Suite 2018.  I started Designer, and clicked the "File" menu.  Designer hangs for a short while, then simply dies.  Using obvious keyboard shortcuts, like ctrl+n or ctrl+o works.  All the other menues works.  Crash situation is the same whether or not I have a document open or not (i.e. empty workspace).