[pstricks] pstricks-add installation

[John Frampton]

This should be easy.  I installed pstricks-add.tex and
pstricks-add.pro in the appropriate places, but something is
wrong.  I get the Tex log (edited to leave only the relevant
lines).

(c:/TeX/texmf/tex/generic/pstricks/pstricks.tex
\@unused=\write3

`PSTricks' v1.14a  <2006/02/06> (tvz)
(c:/TeX/texmf/tex/generic/pstricks/pstricks.con)
(c:/TeX/texmf/tex/generic/pstricks/pst-node.tex  v97 patch 10, 1999/09/03
(c:/TeX/texmf/tex/generic/xkeyval/pst-xkey.tex
2005/11/25 v1.6 PSTricks specialization of xkeyval (HA)
(c:/TeX/texmf/tex/generic/xkeyval/xkeyval.tex
2005/11/25 v2.5e key=value parser (HA)
(c:/TeX/texmf/tex/generic/xkeyval/xkvtxhdr.tex
2005/02/22 v1.1 xkeyval TeX header (HA))
(c:/TeX/texmf/tex/generic/xkeyval/keyval.tex)))
(c:/TeX/texmf/tex/generic/pstricks/pstricks-add.tex
(c:/TeX/texmf/tex/generic/pstricks/pst-plot.tex  v97 patch 2, 1999/12/12
(c:/TeX/texmf/tex/generic/pstricks/multido.tex  v1.4, 93/01/14 <tvz>
(c:/TeX/texmf/tex/generic/pstricks/pst-3d.tex  v97, 1997/03/25)
`pstricks-add' v3.11, 2008/10/13 (dr,hv)


! Undefined control sequence.
\psset at ticksize #1->\psDEBUG
                              [key:ticksize]{setting ticksize} \def \pst at temp...
<argument> ...endcsname \expandafter {\XKV at tempa }
                                                   \relax \XKV at srstate {}{@\r...