why is the same mpc code giving different solutions, when it is simulated for after a month.

I have written a code for mpc and it gave correct results when I simulated it 3 months before, now I opened the same code and executed, but it is giving different results (plots). I did not changed anything, I don't know why it is happening. will you please clarify me where could be the poblem is..?

Thanks in advance.

[Walter Roberson]

Is it possible that you have allowed MATLAB to install an Update between then and now?

[Sarala Gurijala]

yes, but I did not allowed to update

[Arun]

Could you share the code, the earlier results and MATLAB version that you are using?