If you have lost the cards you created in Gizmo due to a crash, follow these steps to attempt recovery:

1. Check for Automatic Backups:
- Gizmo may have created automatic backups of your projects. Look for a “backup” or “autosave” folder within the Gizmo application directory.

2. Access Your App Data:
- Navigate to the AppData folder in your Windows system. You can do this by typing %AppData% into the File Explorer address bar.
- Look for a folder associated with Gizmo or the specific project you were working on.

3. Delete Corrupted Data:
- If you find the Gizmo folder within AppData, you may want to delete the existing corrupted data. Some users reported success by deleting their UEFN folder in AppData as it helped resolve similar crashing issues.
- To do this, locate the folder, right-click on it, and select "Delete" - learn more.

4. Check Project Directory for Saved Files:
- Go to your project directory to see if any files with the project were saved before the crash occurred. Sometimes files made just prior to a crash can be manually recovered.

5. Utilize Recovery Software:
- If the project files appear to be permanently lost, consider using file recovery software. Tools like Recuva or EaseUS Data Recovery Wizard may help retrieve deleted files. Follow the software instructions to scan and recover your work.

6. Contact Gizmo Support:
- If recovery attempts are unsuccessful, reach out to Gizmo support. They may have specific steps for data recovery tailored for your situation - learn more.

7. Consider Regular Backup Practices:
- To avoid future losses, routinely back up your projects into a secure location. Regular backups ensure that even in the event of a crash, your work is recoverable.

By following the steps above, there’s a chance you may recover your lost work or prevent future losses.