I just installed the latest Robotics Toolbox, and run into following problem (this is the example in your book(2nd) at pp. 156 - 157 :
Error using patch
Unrecognized property axis for class Patch.
Error in plot_poly (line 149)
h = patch(x', y', opt.fillcolor, ...
Error in plot_vehicle>draw_robot (line 220)
h = plot_poly(corners, 'animate', 'axis', opt.axis, args{:});
Error in plot_vehicle (line 117)
h.vehicle = draw_robot(d, opt, args);
Error in Vehicle.plotv (line 547)
h = plot_vehicle(varargin{1}, 'fillcolor', 'b', 'alpha', 0.5);
Error in Vehicle/plot (line 419)
veh.vhandle = Vehicle.plotv(veh.x, varargin{:});
Error in Vehicle/run (line 349)
veh.plot();