You will need to clear this Temp folder or move the File location for Auto-save feature or disable this in the program to prevent the message from appearing when running the program.
To disable this feature:
- Select Preferences in File menu,
- Click on Auto-save Settings
- Uncheck all the options in both Adjust Workspace and Edit Workspace tabs
Purging of system's Temp files is also recommended as this may also cause the other issues in your software. Please refer to the following article about removing of Temp files in Windows system: