Error 94. External Optimizer is not selected. You must call OptimizerSetEngine() prior to calling OptimizerSetOption()

You must call OptimizerSetEngine before calling any other Optimizer... functions.

// OptimizerSetEngine("cmae"); // Not called but SHOULD BE
OptimizerSetOption("runs", 1); // Error 94 - you must call OptimizerSetEngine before callign OptimizerSetOption