THROW: there is no CATCHer for tag BAD-POINT

Dear All,

Does anyone know what the error message

THROW: there is no CATCHer for tag BAD-POINT

means, please?  A batch script that produces this message (Maxima
5.13.0 under CLISP 2.41) follows - but if you're thinking of running
it to reproduce the message, please be aware that it runs for a long
time and occupies a lot of RAM.

Thanks,

Dan Hatton

(p1*l+1)*h = 0 ;
(p2*l+1)*j = 0 ;
-h+2*j/3-(l+1)*m = 0 ;
h+i = 1 ;
h+2*i = -p1*(x+g)*f/(z-1+g) ;
j+k = -3*p3*p4*(1-g)/(4*p5*(z-1+g)) ;
j+2*k = -3*p3*p4*p2*p6*(y+g)*f/(2*p5*p7*(z-1+g)) ;
l+m+n = f ;
m+2*n = 0 ;
solve([%th(1),%th(2),%th(3),%th(4),%th(5),%th(6),%th(7),%th(8),%th(9)],[f,g,h,i,j,k,l,m,n])
;