[SOLVED] Header Widgets not visible in 3.7.3

I just updated from 3.6.4 to 3.7.3, and now my header widgets no longer appear on my pages. I have tried updating to newer versions in the past year, but each version since 3.6.4 has broken my header widgets. I have been hoping that subsequent versions would contain a fix, but so far that has not occurred. I could of course revert back to 3.6.4, but I am concerned that staying with an older version will eventually become problematic, so I'd prefer to see if there is some solution to the problem. I've attached the headers from the upgrade (header373) and from a backup where the header worked (header364, but I'm not positive that's the version we were on at that date.) Is there some code that I need to change/add/delete to make our header widgets work again?

Thanks a bunch,
Andi