Hi, Lisa.
In the discussion Sam linked above, you will find the steps to search your temp folder for a possible version of your project. I wanted to post it here as well, in case others in the community also run into file corruption:
- Open this folder in Windows Explorer: %appdata%\Articulate\Storyline
- Scan the contents of this folder for a file that starts with the name of the project. If you find one, copy it to your desktop.
- Change the file extension of the copy on your desktop from *.tmp to *.story.
- Double-click the file to open it in Storyline.
I hope this helps!