So I successfully recorded my 12 string guitar playing Longer Boats in BIAB 2018. Sounds great. But when i render the files, I get total silence. The wav files are there but there is nothing on them. I have my input driver as channel 3 and 4 from my Focusrite interface and outputs as channel 1 and 2.

SO - Without my recorded audio, the file renders all the real Tracks.
With my recorded audio, I get the wav files and all total silence.

Any thoughts on what I am doing wrong.