In Game Editor File Menu Broken

I am attempting to create some new missions so that I can get started on a project.

I am running MS 4.1 of TSE.

I am able to run the demo missions that were included with TSE. However, after opening the in game editor and creating a new mission... I am unable to save, save as, open or, import terraform.

Does anyone know when these menu features were disabled / broken? Any known fixes for this problem? I was able to use these features in the editor for MS3 of TSE.

Any information on the subject would be greatly appreciated!!!!

Yes, I have posted this in other forums as well... without a response.

Thanks.