I foolishly uninstalled (instead of freezing - yes, I now know better) some of the bloatware from the standard (6.13.2150 release (like Yahoo and etc) and ran foul of the contacts error described in
Error Contact Storage
I followed the method to correct but obviously had some other files missing.
Then along came the OTA upgrade to 6.13.219 which failed - so I tried the manual method using
Motorola DROID 4 Update 6.13.219
the upgrade starts but aborts complaining
assert failed apply_patch_check ("/system/app/BlurGallery.apk" ......... (some long numbers)
E:Error in /tmp/sideload/package.zip
Would someone mind posting BlurGallery.apk from the original version -- or better yet perhaps all the /system/app directory (as who knows what else I'm missing) ?