Zan,
Since it's a VSTi, it should work. However, it's also well known that not all VSTis play well with BIAB/RB/PTPA, so, who knows for sure.

I would go to the track that has your drums on it, select the output port as a DXi/VSTi, and then open the LM-4. It's no longer supported by Steinberg, so if you can't get it to work, I doubt you will.

You might consider trying it in another VSTi host, though.

Gary

I'm blessed watching God do what He does best. I've had a few rough years, and I'm still not back to where I want to be, but I'm on the way and things are looking far better now than what they were!