Recovery Required

I'm sorry to hear that, Udita! Let's check in your temp files to see if you have a working version of the project with the scene.

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. If you find one, copy it to your desktop. If you see more than one, copy the latest version to your desktop. 
3. Change the file extension of the copy on your desktop from *.tmp to *.story. 
4. Double-click the file to open it in Storyline.

I'm keeping my fingers crossed — Please keep us updated.