Unable to add terms to the termbase in Studio 2015 (SR2)

Hello,

When I am trying to add a term directly in Studio 2015 to a previously created termbase, a windows pops up asking if I want to open or save a file. After opening the file, a blank page with the following message appears: Saisir [I][T] ou [D] pour ajouter un index, un terme ou un champ descriptif. 

I am not sure what is going on. I upgraded to SR2 and I also installed the newest version of MultiTerm 2015 Could you help me as soon as possible? 

Thank you