Pulse error using module-loopback

[Aidan Gauland]

Hi,

I'm trying to follow a guide on setting up PulseAudio sinks for setup 
with Open Broadcast Studio 
<https://obsproject.com/forum/threads/capture-single-pulseaudio-stream.35170/>, 
but the "pactl load-module module-loopback" step fails with the error 
"Failure: Module initialization failed".  I have been unable to find any 
reports of this error elsewhere, and I don't know how to get Pulse to 
give more verbose output.  Can anyone more familiar with Pulse hackery 
offer any insight?

Regards,
Aidan Gauland