Target document not opening


I've just completed my translation and wanted to send it back in Word as requested by the client. Unfortunately my Word target document (F12) is not opening.

Message: Die Datei kann nciht geöffnet werden, da ihr Inhalt Probleme verursacht.

It was possible to open it just an hour ago.

I remember it's possible to retrieve a translation from the TM. Not sure anymore how it goes. Would anyone have a link with some instructions?

Thanks ever so much