LaTeX.org

True, tlp is a class from a specific journal.
ftp://ftp.cambridge.org/pub/texarchive/journals/latex/tlp-cls

The publisher site is: http://journals.cambridge.org/action/displayJournal?jid=TLP

I believe the above is the newest for the journal there is a newer version of the class (https://github.com ...

Hello all,

I hope this is the correct part of the forum for this message.
I try to use \rowcolor in a document with class tlp.

I get the following message: ! Missing # inserted in alignment preamble.

Minimal working example:
\documentclass{tlp}
\usepackage{colortbl}
\title{aaa}
\author{bbb ...