In Windows 10 or macOS, you may see a message that "Elgato Remote Control plugin is missing". That is the current name of the plugin that interfaces with OBS.
A solution is to:
1. Make sure you have the latest OBS version
2. Launch OBS
3. Launch the latest version of Stream Deck
4. Quit Stream Deck
5. Quit OBS
6. Reinstall Stream Deck
7. Launch OBS
We apologize for any inconvenience this issue may have caused.
OBS Download Page
You can download OBS here:
https://obsproject.com/download