Project broken or empty?

yesterday i started up with a new project for my trainees.
But now i’m not able to open it.
it is not available in th my scenes list. If i open it direct from windows explorer it is only an empty project?
I hope you can help me.

Br Klaus

Hi @kkirchmann,
Inspecting the scene file you sent us by email with a hexadecimal editor shows that the file is ‘empty’ by being filled with zeros. For that reason Factory IO will not open, or display it in the scenes list.
I don’t know what could have caused the file to become filled with zeros. If you have a hunch about what caused it, or if you find a way to do it consistently, please send us the details.