One of the more common mistakes in running LATEX<#634#><#634#> is to read in old
versions of packages instead of the new versions. If you get an
incomprehensible error message from a standard package, make sure you
are loading the most recent version of the package. You can find out
which version of the package has been loaded by looking in the log
file for a line like:
verbatim67#
You can use the <#637#>release-date<#637#> options to | and
| to make sure that you are getting a suitably recent copy
of the document class or package. This is useful when sending a
document to another site, which may have out-of-date software.