Error in NX motion Co-Simulation with Matlab

[Ahnassif]

Good day Everyone,

I'm modelling a motion scenario and I want to optimize my controller in Simulink. Unfortunately, I can't get it to work due to this error:

In NX_motion_cosimulation notepad file:

ERROR - No solution name specified

In Matlab command prompt:

=== Error Message ========================
1. NX/Motion Model is invalid
=> Modify NX/Motion Model and restart simulation
2. Bigger waiting time is needed to open NX/Motion Model
=> Increase Waiting time and restart the simulation
==========================================

=== Error Message ========================
The number of plant input of Simulink is not equal to the number of plant input of NX/Motion.
The number of plant output of Simulink is not equal to the number of plant output of NX/Motion.
==========================================


I tried both Matlab 2012a and 2010b, but with no result.

Regards