Hi Dhivya,
This could be happening because the Simulink Test Support Package for ASAM XIL is picking up the wrong version of MATLAB in the case where you have multiple versions installed.
Please execute these two commands in the MATLAB Command Window of the version you are using:
comserver('register','User','current');
enableservice('AutomationServer', true);
This should ensure that the correct version is registered with the Support Package.
