Hikvision NVR Lost Live View Sub-Stream, But Works On Camera Directly?

I have lost my sub-stream after a reboot of the swtich/camera. I can be logged into the NVR and the camera at the same time. When logged into the camera I can view the main and sub stream no problem. When I select the substream in the NVR/configuration menu for the same channel camera, I get "The camera does not support the function." The main full resolution stream works fine. HikConnect app works fine as well.

IVMS4200 on a separate PC is also reporting Error Code HCNetSDK.dll[91].

To...

Hikvision NVR Lost Live View Sub-Stream, But Works On Camera Directly?