Hello MicahN. There's a few things that would help us figure this one out. Can you please tell me the following:
– Mac/ Win and what version OS you are running
– Whether you're running Reaper 32 or 64 bit
– If you are using SP2016 Reverb in AU or VST format
– A screenshot maye be helpful to see what the parameters look like in your session
– How many instances you are trying to run
– Verify that it's the current SP2016 Reverb build (1.1.1) by hovering your mouse over the Eventide logo on the plugin UI for a couple seconds
With this information, we'll be better equipped to make sure you can run the plugin on your configuration.