Hi there! I understand your KGW app is showing a black screen on your Mac with OS X 10.15.7 when trying to watch Portland Oregon news. To help get this sorted, could you tell me a bit more?

- Is the black screen happening right after you launch the app or when you try to play a video/live stream?
- Have you tried closing and reopening the app or restarting your Mac to see if that helps?
- Are you using the KGW app downloaded from the App Store or watching through a web browser?
- Do you have a steady internet connection during this?

Once I have this info, I can walk you through some steps to fix it! Meanwhile, some general tips for app video streaming issues on your Mac that might help:

1. Quit the KGW app fully and relaunch it.
2. Ensure your Mac software is up to date, especially since you are on macOS Catalina (10.15.7).
3. Clear the app cache or reinstall the KGW app from the App Store.
4. Check if the issue is specific to your device — try streaming KGW live video on another device or on the KGW website: https://www.kgw.com/watch 1.
5. If it’s a recent issue, there might be a temporary problem with live streams on KGW's side. There was a similar livesteam streaming problem previously reported and resolved on mobile apps and Apple TV, so it’s possible a similar hiccup may occur3.

Let me know your responses, and we can proceed! Are you satisfied with this starting info?