A bug has been found in version 2.1ln2 which affects the results in the paper 2004 Ap.J.Supp. 155 675. This is a bookkeeping error resulting in multiple-counting of the iron L shell cross subsection when calculating the cross subsections for the 'third row' ions, Fe I - VIII. This makes a quantitative change to the results in figures 4a and 13a. That is, it affects opacity due to iron above approximately 1 keV, only for low ionization models (log(xi)<0). These errors have been repaired in the version 2.1ln3, and repaired versions of the figures can be found on the xstar website.