I cannot even explain the joy I felt when I found my Articulate Storyline file intact after my computer died. Yes checking the 'Temp folder' really works.
As mentioned above, please save these steps, and keep it for your reference:
(Rewriting from top as these steps almost saved my life. Somehow I neglected to backup in our server.)
If there’s a crash and your file is lost or corrupt, don’t lose hope: there may still be a working version of your project in your temp files. Here's how to check:
1.Open this folder in Windows Explorer: %appdata%\Articulate\Storyline.
2.Scan the contents of this folder for a file that starts with the name of your project.
3.If you find the file, copy it to your desktop (if you find more than one, copy the latest version).
4.Change the file extension of the copy on your desktop from *.tmp to *.story.
5.Double-click the file to open it in Storyline.