Though this is the wrong place for Note II stuff, Still got to share this in the hope it may help someone.
Tried my USB OTG adapter on the Note II today, ( worked fine on the S3 ) bad call, tried it with a keyboard/mouse from a dongle.
This Samsung keyboard error popping up every 20 seconds, removed OTG adapter.,
cleared Samsung keyboard data, reset device no change, still erroring out every few seconds, and swiftkey keyboard not working.
I have the Note II rooted with Titanium backup pro, and generally use Swiftkey.
( though having swiftkey installed and selected did not change the error.)
Ended up backing up the Samsung keyboard app with Titanium back up, and then uninstalling it, fixed issue.
Though there are some fixes with more finesse in this thread, this got things back up, and, frankly, the Samsung keyboard sucks any way lol.
Good luck guys!