Export Video Black/no audio and shortened

Worked on a video for a project with multiple videos.

First video done on day 1 export and looks good.

The next day I upgraded to PP 2019.

Now the export video (in timeline is 3:40 minutes) is black, no audio and is 1:20 long.

I tried various export settings and all the same.

Went back to PP 2018 and now that is doing the something.

I am reading on the internet about CUDA and Mercury Playback.

I have Mercury Playback Engine GPU Acceleration (OpenCL)

other options are Mercury Playback Engine GPU Acceleration (Metal)

Mercury Playback Engine Software Only.

Any help would be very appreciated.

My Computer:  Mac Pro (Late 2013)

Processor 2.7 GHz 12-Core Intel Xeon E5

Memory 64 GB 1866 MHz DDR3

Graphics AMD FirePro D700 6144 MB

Running Mac OS High Sierra