Issue using Auto Differentiation

I have been facing a problem using AutoDiff. Its showing an error when i try to use the code given in Example 6 in the documentation.

% initialize audi grid
[u,v] = ndgrid(linspace(-pi,pi));
[u,v] = ainit(u,v,2);

% define parametrization of a Klein bottle
r = 2;
x = (r+cos(v/2)*sin(u)-sin(v/2)*sin(2*u))*cos(v);
y = (r+cos(v/2)*sin(u)-sin(v/2)*sin(2*u))*sin(v);
z = sin(v/2)*sin(u)+cos(v/2)*sin(2*u);
S = [x;y;z];

% differential geometry
J = ajac(S);                              % Jacobian
Error using  <= 
Matrix dimensions must agree.

Error in audi/sumidx (line 1334)
          f =
          [find(all(J(1:nchoosek(nn+sum(p)-1,nn),:)<=p,2));i];
          
Error in audi (line 48)
      sumidx(r);

Error in ainit (line 42)
  varargout{i} = audi(varargin{i},i,n,k);
 

[Sunetra CV]

Issue resolved. I was using an older version of matlab thats not compatible with the current version of AutoDiff.