To test if it is plugin related, turn off all your plugins and try the widgets again.
If it still doesn’t work, switch your theme to twentyfourteen and try again. If it works now, then you may have issues with your current theme.
Hi!! Guess what – I picked one plugin randomly, and it was the one. What’s odd is that it’s not a new plugin – in fact, it was installed by the original designer at least two years ago. Anyway – I deactivated, did what I needed to do in the widgets, then reactivated b/c I’m not sure if the plugin is really needed or not since I didn’t design the site originally.
So – yay – problem solved. Thanks again!!