I have been working to my project for several days till yesterday. Always correctly saved and today... open the soft and the project is not there anymore. No reason, nothing! Disappeared from the laptop with Win 8.1!

This happened between a backup and another, so I can't recover the yesterday version, with important steps added, from the backup. But in any case this is not something that can happen to a software.

Any idea about a posible recovery?

Thanks