Optimisation Limitations

DesignBuilder v5 has these limitations related to Optimisation:

You must run a simulation with monthly/annual output for the model (on the Analysis tab) before clicking on the optimisation tab. If you don’t have any monthly/annual results on this tab then you must re-run the base simulation before updating the optimisation analysis.
It isn't possible to store multiple optimisation results sets within the DesignBuilder model.