[texhax] clash between a class file & the abbrevs package

[jtzzaa11-texhax at yahoo.com]

Hi All,

I've been provided with a class (ijac.cls) file which seems to clash with the "abbrevs" package. I need to use the latter due to some macros already defined.

A MWE is:

\documentclass{ijac}

\usepackage{abbrevs}

\begin{document}

blah

\end{document}


which produces the error:
Runaway argument?
{\normalsize }\fi \@tempa \small \@tempa \footnotesize \@tempa \large \ETC.
! Paragraph ended before \@tempb was complete.
<to be read again> 
                   \par 



I've uploaded the class file to pastebin: http://pastebin.ca/2081775

and the abbrevs.sty package: http://pastebin.ca/2081776

I would appreciate if the tex gurus here could have a look and advice how to fix this clash.

TIA,
Joel.