Support problem installing OTA 4.1.2 update

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http://androidforums.com – I have an international GNEX. It was bought in June but when I discovered it was Yakjuxw I rooted and installed the stock ICS Yakju using the nexus root tool kit. I then got the OTA JB 4.1.1 update and all was good. Today I got notification of the 4.1.2 update but it will not install. I get the error: Installing update... installing samsung updater extensions Verifying current system... file "/system/vendor/lib/libsec-ril.so" doesn't have any of expected sha1 sums; checking cache failed to stat "/cache/saved.file": No such file or directory failed to load cache file scr (General)