Thanks, James. I tried it. But, still, all the pulldowns on the widgets page do not pulldown. The widgets pulldowns work on my other WordPress sites. And, I tried it in other browsers, same problem.
I am a php programmer, so could fiddle if I knew the right place to fiddle. Hard to imagine what made this break.
Here are the lines I put in my wp-config.php, with a few other lines to show you the placement:
/** MySQL hostname */
define('DB_HOST', 'somestuffhereItookout');
/** Amber added next line to try to fix pull downs on widget page */
define('CONCATENATE_SCRIPTS', false);
/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8');
Thanks,
Amber