ERROR in DCFNet/DCFNet/run_DCFNet.m, line53?

Hi, thnaks for your sharing.

When i run the code in matlab2016a with matconvnet beta25, there is always an error:

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error using vl_argparse (line 63)
OPTS must be a structure

error vl_argparse (line 160)
opts.(field) = vl_argparse(opts.(field), value,
'merge') ;

error vl_argparse (line 97)
opts = vl_argparse(opts, vertcat(params,values),
varargin{:}) ;

error DCFNet_initialize (line 16)
state = vl_argparse(state, param);

error demo_DCFNet (line 43)
[state, ~] = DCFNet_initialize(im{1}, init_rect, opts);

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After a check on the relevant code, the error could be aviod when the code 'state.net =[];' changed to be 'state.net = param.net;' in DCFNet_initialize.m.

Does the error occured because my matconvnet version or something else?

Thanks!