OK, I dug up some notes I had from WAY back. In Windoze, a window can be Maximized by doing Alt, Space-Bar, X
This can maximize a window that has somehow been Minimized.
So I went to the menu and selected Scripts>Script Workplace. The menu commands ( File, Edit, Insert, etc,) were grayed, indicating that the "Script Workplace" window was "selected". Even though the Script Workplace window did not appear on my screen, I was able to do the Alt, Space-Bar, X sequence to cause the Script Workplace window to then Maximize and appear. Maybe this will help someone else. thanks
sometimes, 'resetting all dialog windows' (preferences) might help as well. Happened here, helped (Windows 8.1)