Thanks for getting back to me. None of the extension is loaded with the workbench. other students in my groups after the install have 4 defaults extensions listed in their Extensions Manager.

As part of the project i need to install the model reduction extension " MORACT extension " . i have tried and it was not working. I was told i have to figure out first why the defaults extensions are not loading with my workbench before proceeding with MORact extension.

extensions manager .