The main feature I want to use guitar shed for does not work (never has), with my presonus firebox audio recording interface. It seems there is a bug/problem getting external audio interfaces (not just the firebox) to get recognized by the tuner.

I know they are trying to fix it and get it to work but how hard can it be. Its ridiculous to sell a product that does not work, and its not like I am using some cheapo input device.