"Attempted to read or write protected memory. This is often an indication that other memory is corrupt".

Hi everybody, when I try to add a term from within Studio 2017 SR1 to multiform termbase, I got the following error message: 

"Attempted to read or write protected memory. This is often an indication that other memory is corrupt".

I have tried reorganizing the termbase, removing and reinstalling trados and multiterm 2017 and I have checked that both applications are up-to-date. Also, I don't have any antivirus installed.

Thank you for your help,

Bruno