New SD Card... can't get Dump1090-mut running

You might take a look at the threads below, they may help. There are others as well:

ads-b-flight-tracking-f21/what-is-easiest-way-to-install-dump1090-mutability-t35431.html
ads-b-flight-tracking-f21/multilateration-mlat-now-available-on-piaware-t35637.html
ads-b-flight-tracking-f21/raspberry-pi-dump1090-feed-directly-to-flightaware-t17779.html
ads-b-flight-tracking-f21/raspbian-ubuntu-packages-for-dump1090-mutability-available-t19619.html