First plotdf save to c:\work2\ch1p8b.eps is ok.
Second plotdf save to c:\work2\ch1p8c.eps gives
error message:
TK application error: named font "hevetical 16 normal"
already exists.
--------------------
(%i1) plotdf(exp(-x) + y^2);
(%i2) plotdf(exp(-x) + y^3);
--------------
(%i4) build_info();
Maxima version: 5.18.1
Maxima build date: 20:57 4/19/2009
host type: i686-pc-mingw32
lisp-implementation-type: GNU Common Lisp (GCL)
lisp-implementation-version: GCL 2.6.8
Ted Woollett