Hi there! I understand that the Omaha World-Herald app on your Mac keeps rebooting during downloads, right? To help you better, could you tell me a bit more:

- Are you downloading the app updates or content within the app?
- Does the whole Mac reboot or just the app itself?
- Does this happen at the same download spot every time?
- Have you noticed any error messages showing up?

Once I get these details, I can guide you through some targeted steps. Meanwhile, I’d like to suggest starting with a couple of basic checks since you’re on macOS 10.15.7 (Catalina):

1. Free up disk space: Confirm your Mac has enough storage space. Low storage can cause app issues during downloads. You can check by clicking Apple menu > About This Mac > Storage.

2. Restart your Mac: Sometimes, a fresh reboot clears temporary glitches affecting apps.

3. Update the app: Ensure you’re running the latest Omaha World-Herald app version available from the App Store.

4. Check your internet connection: A spotty connection can interrupt downloads and trigger app crashes.

If the problem persists after those steps, we can look into deeper fixes like clearing app cache or preferences on your Mac, or looking into possible software conflicts.

Could you let me know where you stand with these steps? That way, I can help you move forward effectively.