LaTeX.org

thank you, I'll try to send email to the editor!

Hi All,
when I use aiaa.cls class, i can't use \usepackage{XXXX} since the compiler says:

! LaTeX Error: \RequirePackage or \LoadClass in Options Section.

See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...

l.3 \begin{document}

?

Do you have any ...