[pstricks] Pstricks-add issues

[Richard Hensh]

I'm loading the following macro packages:

\usepackage{calc,pstricks,pstcol,pst-plot,pst-math,pstricks-add}
\usepackage{amsmath}
\usepackage{array}
%\usepackage{graphicx}

I get the following error with the latest version of pstricks-add:


! Undefined control sequence.
\KV at split ...me \ifx \@tempc \relax \KV at undefined 
                                                  {#2}{#3}\else \ifx
\@empty...


Can anyone help?

Thanks
ricky