Protected Model Simulation Mode

I want to protect a Referenced model in Simulink and already downloaded the SIMULINK-Coder. But when i try to do so I get the following error, even if I try to follow the example provided by Mathworks.

'The model 'sldemo_mdlref_counter_bus' contains a Model block. Model blocks using Accelerator mode are not supported with this license. The Model block will run in Normal mode.'

I already checked that the Simulation Mode is set to 'Normal'

[Yves BAKANG]

SAME PROBLEM !