Video not working after update

I just downloaded Davinci 15.2.

I had been using the Davinci Resolve Beta as of 4/8/18.

All of my projects were transferred to the newer version but now they won't play or produce audio.

All the video clips and edits are visible, they just won't play. The media is still online.

Please help.

Please read this viewtopic.php?f=21&t=71894

Please read this viewtopic.php?f=21&t=71894

I made the changes to my signature. The newest version I'm using is Resolve 15.2.1.005. I had upgraded from the Resolve 15.0b1 beta that was relevant as of 4/8/18 (I don't know any more specifics)

I have also put a screenshot of my issue below. The clips and my video history came along with me during the upgrade, but now none of them will actually play video or omit audio. It's a soundless black screen even when I try to preview a clip.

Thank you