I've just put up the package below on tug.ctan.org and it should soon be at your favorite mirror.
Thanks again, Jim Hefferon Saint Michael's College
........................................................................
The following information was provided by our fellow contributor:
Name of contribution: errata Author's name: Michael Kohlhase Location on CTAN: /macros/latex/contrib/errata Summary description: errata.sty: Error markup for LaTeX documents License type: lppl
Announcement text: ---------------------------------------------------------------------- This package provides a simple infrastructure for recording errata in LaTeX documents. This allows to maintain an updated version of the document (with all errors corrected) and automatically generate an errata document highlighting the difference to the published version. ----------------------------------------------------------------------
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/errata . More information is at http://tug.ctan.org/pkg/errata (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .