Closing this topic out.
Thanks again!
WOW! Thank you so much!
Deactivating the plugins, then reactivating only Jetpack (which powers my Facebook and Twitter widgets) worked!
All the widgets are now showing up again.
Thank you so much!
-Mark
Thank you so much for responding, Maximum. My dashboard tells me I have the latest theme version (and no child themes).
Here is the link to my site:
http://bloodthirstycomic.com/
