On common invariant subspaces for commuting contractions with rich spectrum (Indiana Univ. Math. J. \textbf{53} (2004), 823--844): Erratum Marek Kosiek 47A6047A15contractionsdual algebrasfunctional calculusinvariant subspaces An error was found in the proofs of Theorems 4.4 and 4.5 of [M. Kosiek and A. Octavio, \emph{On common invariant subspaces for commuting contractions with rich spectrum}, Indiana Univ. Math. J. \textbf{53} (2004), 823--844}. This paper replaces said proofs by weaker results, which are, however, strong enough to prove all other theorems of [the work cited above], in particular all the results concerning invariant subspaces. Indiana University Mathematics Journal 2010 text pdf 10.1512/iumj.2010.59.4146 10.1512/iumj.2010.59.4146 en Indiana Univ. Math. J. 59 (2010) 1541 - 1546 state-of-the-art mathematics http://iumj.org/access/