  Given a central simple algebra $\mathfrak{g}$ and a Galois extension of base
rings $S/R$, we show that the maximal ideals of twisted $S/R$-forms of the
algebra of currents $\mathfrak{g}(R)$ are in natural bijection with the maximal
ideals of $R$. When $\mathfrak{g}$ is a Lie algebra, we use this to give a
complete classification of the finite-dimensional simple modules over twisted
forms of $\mathfrak{g}(R)$.
