Scrivener stopped working as I saved and now ...

While I was saving my novel, Scrivener suddenly stopped answering and had to shut down.
After this my dokument have been empty. All my characters, chapters, scenes and places are there - but empty. Not one word is to be found in the entire document.
I have consulted with Google and found some sites that tell how to recover lost documents in Scrivener - but nothing works.
The Backups are empty. The docs folder is empty.

I am still on a trial version of the program.

Can someone please help?