"attempt to index field 'soundConfiguration'" when trying to change a vehicles engine sounds

I'm trying to change the vivace's engine sound. I'm following this thread: https://www.beamng.com/threads/tutorial-how-to-change-vehicle-sounds.29193/

However when I try to spawn the vivace in I get the "This is often caused by broken mods" message (I ran it in safe mode, gave the same error.), and then an exception shows up in the console:

"lua/vehicle/powertrain/combustionEngine.lua:1030: attempt to index field "soundConfiguration" (a nil value)"

I placed my sounds folder with the .SBEAM right inside of the vivace folder located in Documents/BeamNG.Drive/vehicles since trying to zip it up and put it in my mods folder wouldn't work.

Sorry if I haven't given enough info. I'd just like to know how to fix this. Thanks