Numerical Methods For Differential Equations

Calling load("diffeq") gives me the following error:

Unknown argument - STATUS:
RUNTIME
 -- an error.  Quitting.  To debug this try DEBUGMODE(TRUE);


This is on a defaut installation of Maxima 5.9.1.

Any ideas?

Thanks for your help,
Ben

On 9/25/05, Donna and Dan Stanger  wrote:
> You may want to look at share/numeric/diffeq.mac
> Also the slatec library is available.
>
> Benjamin Good wrote:
>
> > Hello, I'm new to Maxima and am currently enrolled in a Differential
> > Equations course at college.  In our class we use Matlab and
> > Mathematica to solve equations both symbolically and numerically.
> > However, due to their prohibitive price and my interest in open source
> > software, I've installed Maxima on my personal computer (a Mac).  The
> > symbolic methods in Maxima are spectacular so far, but I've been
> > confused about the numerical methods.  In a few places on the internet
> > I've heard mention of an NDIFFQ package containing an rk4 method
> > amoung others, but such a package doesn't exist in the default
> > installation.  So my questions are:
> >
> > Is there a way to solve differential equations numerically using Maxima?
> >
> > Is there a way to plot slope fields using Maxima?
> >
> > Thank you very much.
> >
> > Ben
> >
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> > Maxima@math.utexas.edu
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>
>