problem with latest update to update wizard...

After first .zipping up my current installation (64-bit MiKTeX under Win 
7 Pro), I tried installing the latest bunch of updates (most dated 
12/23/2016), starting with the single, selected package (2.9_x64-bin). 
Update seemed to go fine -- usually, the next step for these sorts of 
'tiered' updates is to install the first updated package, then run the 
update wizard again, and install the rest of the updates.

Unfortunately, this isn't working for me -- when I run the 'new and 
updated' update wizard, it responds with 'Sorry, but something went 
wrong. MiKTeX encountered an internal error'. When I tried running the 
wizard from the package manager, same error, but I could dumpy log to 
the clip-board (pasted below).

MiKTeX Problem Report
Message: MiKTeX encountered an internal error.
Data:
Source: Programs\MiKTeX\PackageManager\MFC\MpmView.cpp
Line: 918
MiKTeX: 2.9
OS: Windows 7 Home Premium, 64-bit, Service Pack 1, build 7601
Invokers: explorer
SystemAdmin: no
PowerUser: no
Root0: C:\Users\egc\AppData\Roaming\MiKTeX\2.9
Root1: C:\Users\egc\AppData\Local\MiKTeX\2.9
Root2: C:\Users\egc\Desktop\egc\text\MikTeX
Root3: C:\ProgramData\MiKTeX\2.9
Root4: C:\Program Files\MiKTeX 2.9
UserInstall: C:\Users\egc\Desktop\egc\text\MikTeX
UserConfig: C:\Users\egc\AppData\Roaming\MiKTeX\2.9
UserData: C:\Users\egc\AppData\Local\MiKTeX\2.9
CommonInstall: C:\Program Files\MiKTeX 2.9
CommonConfig: C:\ProgramData\MiKTeX\2.9
CommonData: C:\ProgramData\MiKTeX\2.9


I get the same error regardless of whatever update wizard option I try 
(nearest mirror, most recent mirror, etc).

Any idea what the problem is? In the interim, I've reverted back to the 
.zipped version of my install (step 1, above), which works perfectly.

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
_______________________________________________
Q: How can I leave the mailing list?
A: See http://docs.miktex.org/faq/support.html#leavingml