You shouldn't need to use regedit to get this fixed. Actually I've never had to use regedit to fix a problem at all.
Double-check this and if it doesn't fix it I'm sure Leo will step in and figure it out.
Open a lister, choose Preferences from the Settings pull-down. Scroll down to Plugins under the Viewer category on the left. Here you can change not only which plugins are active, but also the order they are called.
Here is the order that works for me: Audio Tags, Movie, Raw Digital Camera, Animated GIF, JPEG 2000, PCX, Targa, WebP, HEIF, Wav, WMA, ActiveX, Multi-view, Text File Thumbnails, Text.
Make sure all are active except Multi-view.
I use this every day - once you get it right, it's totally solid. I've also created a button that toggles both the player and view windows together, so you can click on a track, click the button, have it play in the pane that opens on the top right, and view the attributes of the track on the bottom right. Click the button again and the panes both close. Easy button to create...