Problem with recent version of yalmip for cplex.

[convex_optimization]

dear members, 

I downloaded the recent ersion of yalmip  but it gives the following error for cplex.

what can be the cause?

thank you.

[Johan Löfberg]

You would have to turn on debug to see what actually happens. However, cplex has dropped matlab support so it is not of priority, you are better off switching to gurobi, mosek, xpress

sdpvar x
optimize(x>=0,x,sdpsettings('solver','cplex','debug',1))

[convex_optimization]

I obtain the following error:

sdpvar x
optimize(x>=0,x,sdpsettings('solver','cplex','debug',1))

Unrecognized field name "ProblemClass".

Error in call_cplexibm_miqp (line 4)
if interfacedata.ProblemClass.objective.quadratic.nonconvex
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in call_cplexibm_qcmiqp (line 9)
    output = call_cplexibm_miqp(interfacedata);
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in solvesdp (line 420)
    eval(['output = ' solver.call '(interfacedata);']);
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in optimize (line 31)
[varargout{1:nargout}] = solvesdp(varargin{:});
                         ^^^^^^^^^^^^^^^^^^^^^

[convex_optimization]

In fact,  gurobi is also failing. My matlab version is 2024b.   please see the attachment.

[Johan Löfberg]

ProblemClass should be problemclass

I think your gurobi crash is completely unrelated, most likely a license problem, so you will have to debug that in the same way.