Hello,
I have been experimenting with Kerberos (not Kraken) and DOA MUSIC block. They do not work together.
I have examined the source code, and in the file python/krakensdr/doa_music.py, lines 47 to 51, you have the number of channels hardcoded to five.
As I only use Kerberos, I deleted line number 51, that corresponds with 5th channel, then recompiled and reinstalled blocks, and it works fine since that. It was the fastest solution for me.
I suppose you will prefer to replace these lines with a for loop to make it always work.
Regards,
Ger EA4GJA