1) The AppleScript worked perfectly. However, it does presuppose your bottle name for WP12 is "WordPerfect Office 12" . Re-starting WP now functions well. Sometimes I still must Force Quit the WP12 icon on the dock before re-starting.
2) By unchecking "Use enhanced file dialog" (Tools > Settings > Files check box) suggested in another thread one can handle the file-dialog "hang" issue that required a forced non-responding shutdown of the WP12 bottle.
3) In addition, I find using F9 (Font dialog) is necessary to change fonts in WP12 (but not in Presentations or Quattro Pro), because in WP12 the Toolbar Font and Size items simply rapidly flash and close without allowing one to select font and size. They work normally in Presentations and Quattro Pro.
4) Importing WPDos 5.1 DOS document tables requires re-setting the padding around the text; this is a nuisance, but workable; however, OpenOffice/LibreOffice, do just fine. The WP-Win ability to correctly import WP5.1 tables disappeared somewhere around WP-10 and Corel has never corrected it.
That said, thanks to Codeweavers and the great people helping folks like me in this forum, I at last have gotten WP-Win12 running on my Mac (I have continued to use WP-DOS since 1987 - still using 5.1).