Can't See Video Thumbnails or Preview Audio Files

Hi!

So I'm on a 2015 iMac, Quad-Core i7, 32GB, AM Radeon R9 4GB Graphics and I've been using Bridge for years. However since the recent update, I'm unable to preview my video thumbnails, they just show as the Quicktime icon, which is a pain since I need to review the clips to help find what I need with ease. I also use to have the ability for the audio to play automatically when selected, but now nothing happens.

Checking preferences, nothing has changed. I've uninstalled/reinstalled Bridge, installed an older version, cleared the cache, reset preferences, still nothing. Are there any tricks I'm missing that I should consider to restore this? I appreciate any assistance that can be provided.

Thank you in advance!