New release on the github. It fixed a crash that would happen if the preset file wasn't properly extracted and there was another issue with presets duplicating that was fixed. There's also a detailed description of where to extract the zip file.
For future reference, some troubleshooting tips:
Presets are empty?
Make sure you extracted both "data" and "obs-plugins" folder from the zip file into your obs install folder.
Can't find your OBS or Streamlabs OBS install folder?
Right-click on your OBS shortcut (either on desktop or in your start menu) and choose "Open file location". From here you'll need to go up 2 directories to get to the correct folder. The easiest way is to look at the address bar in the explorer window which will typically be something like "> This PC > Local Disk (C:) > Program Files (x86) > obs-studio > bin > 64bit". You can click on each item between the arrows. You need to click on the "obs-studio" in that address bar and you'll be in the correct folder to extract the zip to now. Easiest way is to simply drag and drop the contents from the zip file into this folder.
For Streamlabs OBS, right-click on the Streamlabs OBS shortcut and choose "Open file location". You may need to scroll up, and find the folders list here, then navigate from here to "\resources\app.asar.unpacked\node_modules\obs-studio-node\libobs". You'll be in the correct folder to extract the zip to now. Easiest way is to simply drag and drop the contents from the zip file into this folder.
The OpenVR capture source is completely black and not working?
Make sure SteamVR is running. Also, try removing the OpenVR capture source and adding a new one.
OBS crashed?
Most of the crashes should be fixed with the latest update on the github. Sometimes it will require you to reinstall OBS. If you reinstall and still get a crash, you can go to File > Show Settings Folder in OBS and go into "crashes" folder and paste the latest crash log from there, paste it using something like pastebin and post here or on the github page as a new issue. Also include the latest log file which will be in the "logs" folder once you go into the settings folder. If you need to get to the settings folder manually, press Windows Key + R for the run window, and paste this: C:\Users\%Username%\AppData\Roaming\obs-studio
OBS closes when you close SteamVR?
SteamVR attempts to close any program associated with it. Typically that would be the game you're playing in VR which is fine, but since this plugin makes OBS use SteamVR api, it will also try to close it. There are checks in the plugin to prevent it but it still seems to close OBS most of the time. Still looking into how to fix this issue, for now it's best to make sure you have everything setup correctly before you start stream, so you don't have to restart SteamVR while streaming.