Alamo's "King James Version"

Curiosity caused me to request a free Bible through Alamo Christian Ministry's web site. They sent me a "King James Version" that renders the last verse of Revelation as "power" in lieu of "grace" as in all legitimate KJVs. This is probably a typographical error, but it does make one wonder given Alamo's questionable history and theology though!!!!!:)

an interesting odd little thing, and so I checked out a few other bibles, and was unable to find one that also used "power" there.

Im thinking it was a weird error?