Hi, Gerry.
You will need the .story file if you want to make changes to the project. While there isn't a way to download the source file from Review 360, you can check to see if the file is in your temp folder:
- 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!