Cannot use different banks - no audio

[Stooovie]

No matter what I do, I can't use any other bank than the bank0.yaml - bank2.yaml provided with Fluidpatcher.

I did copy the router_rules section, and the init section on the bottom, i did put the proper filename into squishboxconf.yaml (currentbank: fluid_gmbank.yaml), paths are unchanged, yet upon reboot it just doesn't play. The file looks like this and produces no sound at all at any channel or patch number:

router_rules:
  - {type: cc, chan: 1=2-16, par1: 7}
  - {type: cc, chan: 1=2-6, par1: 1}
  - {type: cc, chan: 1=2-6, par1: 64}
  - {type: cc, chan: 1=2-6, par1: 91}
  - {type: pbend, chan: 1=2-6}


patches:
  Yamaha Grand Piano:
    1: FluidR3_GM.sf2:000:000
  Bright Yamaha Grand:
    1: FluidR3_GM.sf2:000:001
  Electric Piano:
    1: FluidR3_GM.sf2:000:002
  Honky Tonk:
    1: FluidR3_GM.sf2:000:003
  Rhodes EP:
    1: FluidR3_GM.sf2:000:004
  Legend EP 2:
    1: FluidR3_GM.sf2:000:005
  Harpsichord:
    1: FluidR3_GM.sf2:000:006
  Clavinet:
    1: FluidR3_GM.sf2:000:007
  Celesta:
    1: FluidR3_GM.sf2:000:008
  Glockenspiel:
    1: FluidR3_GM.sf2:000:009
  Music Box:
    1: FluidR3_GM.sf2:000:010
  Vibraphone:
    1: FluidR3_GM.sf2:000:011
  Marimba:
    1: FluidR3_GM.sf2:000:012
  Xylophone:
    1: FluidR3_GM.sf2:000:013
  Tubular Bells:
    1: FluidR3_GM.sf2:000:014
  Dulcimer:
    1: FluidR3_GM.sf2:000:015
  DrawbarOrgan:
    1: FluidR3_GM.sf2:000:016
  Percussive Organ:
    1: FluidR3_GM.sf2:000:017
  Rock Organ:
    1: FluidR3_GM.sf2:000:018
  Church Organ:
    1: FluidR3_GM.sf2:000:019
  Reed Organ:
    1: FluidR3_GM.sf2:000:020
  Accordian:
    1: FluidR3_GM.sf2:000:021
  Harmonica:
    1: FluidR3_GM.sf2:000:022
  Bandoneon:
    1: FluidR3_GM.sf2:000:023
  Nylon String Guitar:
    1: FluidR3_GM.sf2:000:024
  Steel String Guitar:
    1: FluidR3_GM.sf2:000:025
  Jazz Guitar:
    1: FluidR3_GM.sf2:000:026
  Clean Guitar:
    1: FluidR3_GM.sf2:000:027
  Palm Muted Guitar:
    1: FluidR3_GM.sf2:000:028
  Overdrive Guitar:
    1: FluidR3_GM.sf2:000:029
  Distortion Guitar:
    1: FluidR3_GM.sf2:000:030
  Guitar Harmonics:
    1: FluidR3_GM.sf2:000:031
  Acoustic Bass:
    1: FluidR3_GM.sf2:000:032
  Fingered Bass:
    1: FluidR3_GM.sf2:000:033
  Picked Bass:
    1: FluidR3_GM.sf2:000:034
  Fretless Bass:
    1: FluidR3_GM.sf2:000:035
  Slap Bass:
    1: FluidR3_GM.sf2:000:036
  Pop Bass:
    1: FluidR3_GM.sf2:000:037
  Synth Bass 1:
    1: FluidR3_GM.sf2:000:038
  Synth Bass 2:
    1: FluidR3_GM.sf2:000:039
  Violin:
    1: FluidR3_GM.sf2:000:040
  Viola:
    1: FluidR3_GM.sf2:000:041
  Cello:
    1: FluidR3_GM.sf2:000:042
  Contrabass:
    1: FluidR3_GM.sf2:000:043
  Tremolo:
    1: FluidR3_GM.sf2:000:044
  Pizzicato Section:
    1: FluidR3_GM.sf2:000:045
  Harp:
    1: FluidR3_GM.sf2:000:046
  Timpani:
    1: FluidR3_GM.sf2:000:047
  Strings:
    1: FluidR3_GM.sf2:000:048
  Slow Strings:
    1: FluidR3_GM.sf2:000:049
  Synth Strings 1:
    1: FluidR3_GM.sf2:000:050
  Synth Strings 2:
    1: FluidR3_GM.sf2:000:051
  Ahh Choir:
    1: FluidR3_GM.sf2:000:052
  Ohh Voices:
    1: FluidR3_GM.sf2:000:053
  Synth Voice:
    1: FluidR3_GM.sf2:000:054
  Orchestra Hit:
    1: FluidR3_GM.sf2:000:055
  Trumpet:
    1: FluidR3_GM.sf2:000:056
  Trombone:
    1: FluidR3_GM.sf2:000:057
  Tuba:
    1: FluidR3_GM.sf2:000:058
  Muted Trumpet:
    1: FluidR3_GM.sf2:000:059
  French Horns:
    1: FluidR3_GM.sf2:000:060
  Brass Section:
    1: FluidR3_GM.sf2:000:061
  Synth Brass 1:
    1: FluidR3_GM.sf2:000:062
  Synth Brass 2:
    1: FluidR3_GM.sf2:000:063
  Soprano Sax:
    1: FluidR3_GM.sf2:000:064
  Alto Sax:
    1: FluidR3_GM.sf2:000:065
  Tenor Sax:
    1: FluidR3_GM.sf2:000:066
  Baritone Sax:
    1: FluidR3_GM.sf2:000:067
  Oboe:
    1: FluidR3_GM.sf2:000:068
  English Horn:
    1: FluidR3_GM.sf2:000:069
  Bassoon:
    1: FluidR3_GM.sf2:000:070
  Clarinet:
    1: FluidR3_GM.sf2:000:071
  Piccolo:
    1: FluidR3_GM.sf2:000:072
  Flute:
    1: FluidR3_GM.sf2:000:073
  Recorder:
    1: FluidR3_GM.sf2:000:074
  Pan Flute:
    1: FluidR3_GM.sf2:000:075
  Bottle Chiff:
    1: FluidR3_GM.sf2:000:076
  Shakuhachi:
    1: FluidR3_GM.sf2:000:077
  Whistle:
    1: FluidR3_GM.sf2:000:078
  Ocarina:
    1: FluidR3_GM.sf2:000:079
  Square Lead:
    1: FluidR3_GM.sf2:000:080
  Saw Wave:
    1: FluidR3_GM.sf2:000:081
  Calliope Lead:
    1: FluidR3_GM.sf2:000:082
  Chiffer Lead:
    1: FluidR3_GM.sf2:000:083
  Charang:
    1: FluidR3_GM.sf2:000:084
  Solo Vox:
    1: FluidR3_GM.sf2:000:085
  Fifth Sawtooth Wave:
    1: FluidR3_GM.sf2:000:086
  Bass & Lead:
    1: FluidR3_GM.sf2:000:087
  Fantasia:
    1: FluidR3_GM.sf2:000:088
  Warm Pad:
    1: FluidR3_GM.sf2:000:089
  Polysynth:
    1: FluidR3_GM.sf2:000:090
  Space Voice:
    1: FluidR3_GM.sf2:000:091
  Bowed Glass:
    1: FluidR3_GM.sf2:000:092
  Metal Pad:
    1: FluidR3_GM.sf2:000:093
  Halo Pad:
    1: FluidR3_GM.sf2:000:094
  Sweep Pad:
    1: FluidR3_GM.sf2:000:095
  Ice Rain:
    1: FluidR3_GM.sf2:000:096
  Soundtrack:
    1: FluidR3_GM.sf2:000:097
  Crystal:
    1: FluidR3_GM.sf2:000:098
  Atmosphere:
    1: FluidR3_GM.sf2:000:099
  Brightness:
    1: FluidR3_GM.sf2:000:100
  Goblin:
    1: FluidR3_GM.sf2:000:101
  Echo Drops:
    1: FluidR3_GM.sf2:000:102
  Star Theme:
    1: FluidR3_GM.sf2:000:103
  Sitar:
    1: FluidR3_GM.sf2:000:104
  Banjo:
    1: FluidR3_GM.sf2:000:105
  Shamisen:
    1: FluidR3_GM.sf2:000:106
  Koto:
    1: FluidR3_GM.sf2:000:107
  Kalimba:
    1: FluidR3_GM.sf2:000:108
  BagPipe:
    1: FluidR3_GM.sf2:000:109
  Fiddle:
    1: FluidR3_GM.sf2:000:110
  Shenai:
    1: FluidR3_GM.sf2:000:111
  Tinker Bell:
    1: FluidR3_GM.sf2:000:112
  Agogo:
    1: FluidR3_GM.sf2:000:113
  Steel Drums:
    1: FluidR3_GM.sf2:000:114
  Woodblock:
    1: FluidR3_GM.sf2:000:115
  Taiko Drum:
    1: FluidR3_GM.sf2:000:116
  Melodic Tom:
    1: FluidR3_GM.sf2:000:117
  Synth Drum:
    1: FluidR3_GM.sf2:000:118
  Reverse Cymbal:
    1: FluidR3_GM.sf2:000:119
  Fret Noise:
    1: FluidR3_GM.sf2:000:120
  Breath Noise:
    1: FluidR3_GM.sf2:000:121
  Sea Shore:
    1: FluidR3_GM.sf2:000:122
  Bird Tweet:
    1: FluidR3_GM.sf2:000:123
  Telephone:
    1: FluidR3_GM.sf2:000:124
  Helicopter:
    1: FluidR3_GM.sf2:000:125
  Applause:
    1: FluidR3_GM.sf2:000:126
  Gun Shot:
    1: FluidR3_GM.sf2:000:127
  Detuned EP 1:
    1: FluidR3_GM.sf2:008:004
  Detuned EP 2:
    1: FluidR3_GM.sf2:008:005
  Coupled Harpsichord:
    1: FluidR3_GM.sf2:008:006
  Church Bell:
    1: FluidR3_GM.sf2:008:014
  Detuned Organ 1:
    1: FluidR3_GM.sf2:008:016
  Detuned Organ 2:
    1: FluidR3_GM.sf2:008:017
  Church Organ 2:
    1: FluidR3_GM.sf2:008:019
  Italian Accordion:
    1: FluidR3_GM.sf2:008:021
  Ukulele:
    1: FluidR3_GM.sf2:008:024
  12 String Guitar:
    1: FluidR3_GM.sf2:008:025
  Hawaiian Guitar:
    1: FluidR3_GM.sf2:008:026
  Funk Guitar:
    1: FluidR3_GM.sf2:008:028
  Feedback Guitar:
    1: FluidR3_GM.sf2:008:030
  Guitar Feedback:
    1: FluidR3_GM.sf2:008:031
  Synth Bass 3:
    1: FluidR3_GM.sf2:008:038
  Synth Bass 4:
    1: FluidR3_GM.sf2:008:039
  Slow Violin:
    1: FluidR3_GM.sf2:008:040
  Orchestral Pad:
    1: FluidR3_GM.sf2:008:048
  Synth Strings 3:
    1: FluidR3_GM.sf2:008:050
  Brass 2:
    1: FluidR3_GM.sf2:008:061
  Synth Brass 3:
    1: FluidR3_GM.sf2:008:062
  Synth Brass 4:
    1: FluidR3_GM.sf2:008:063
  Sine Wave:
    1: FluidR3_GM.sf2:008:080
  Taisho Koto:
    1: FluidR3_GM.sf2:008:107
  Castanets:
    1: FluidR3_GM.sf2:008:115
  Concert Bass Drum:
    1: FluidR3_GM.sf2:008:116
  Melo Tom 2:
    1: FluidR3_GM.sf2:008:117
  808 Tom:
    1: FluidR3_GM.sf2:008:118
  Burst Noise:
    1: FluidR3_GM.sf2:009:125
  Mandolin:
    1: FluidR3_GM.sf2:016:025
  Standard:
    1: FluidR3_GM.sf2:128:000
  Standard 1:
    1: FluidR3_GM.sf2:128:001
  Standard 2:
    1: FluidR3_GM.sf2:128:002
  Standard 3:
    1: FluidR3_GM.sf2:128:003
  Standard 4:
    1: FluidR3_GM.sf2:128:004
  Standard 5:
    1: FluidR3_GM.sf2:128:005
  Standard 6:
    1: FluidR3_GM.sf2:128:006
  Standard 7:
    1: FluidR3_GM.sf2:128:007
  Room:
    1: FluidR3_GM.sf2:128:008
  Room 1:
    1: FluidR3_GM.sf2:128:009
  Room 2:
    1: FluidR3_GM.sf2:128:010
  Room 3:
    1: FluidR3_GM.sf2:128:011
  Room 4:
    1: FluidR3_GM.sf2:128:012
  Room 5:
    1: FluidR3_GM.sf2:128:013
  Room 6:
    1: FluidR3_GM.sf2:128:014
  Room 7:
    1: FluidR3_GM.sf2:128:015
  Power:
    1: FluidR3_GM.sf2:128:016
  Power 1:
    1: FluidR3_GM.sf2:128:017
  Power 2:
    1: FluidR3_GM.sf2:128:018
  Power 3:
    1: FluidR3_GM.sf2:128:019
  Electronic:
    1: FluidR3_GM.sf2:128:024
  TR-808:
    1: FluidR3_GM.sf2:128:025
  Jazz:
    1: FluidR3_GM.sf2:128:032
  Jazz 1:
    1: FluidR3_GM.sf2:128:033
  Jazz 2:
    1: FluidR3_GM.sf2:128:034
  Jazz 3:
    1: FluidR3_GM.sf2:128:035
  Jazz 4:
    1: FluidR3_GM.sf2:128:036
  Brush:
    1: FluidR3_GM.sf2:128:040
  Brush 1:
    1: FluidR3_GM.sf2:128:041
  Brush 2:
    1: FluidR3_GM.sf2:128:042
  Orchestra Kit:
    1: FluidR3_GM.sf2:128:048
	
init:
  messages: [cc:4:37:60, cc:4:65:127, cc:4:68:127,
             cc:5:71:0, cc:5:73:0, cc:5:74:0, cc:5:78:40, cc:5:79:40, cc:5:80:80, cc:5:81:127, cc:5:82:80, 
             cc:5:71:0, cc:5:73:0, cc:5:74:0, cc:5:78:40, cc:5:79:40, cc:5:80:80, cc:5:81:127, cc:5:82:80, 
             cc:6:100:0, cc:6:101:0, cc:6:6:12, cc:6:38:0]

I don't see any functional difference to the default bank#.yaml files, yet those play and this doesn't. Permissions are the same. No other files have been manipulated.

Rpi4, Debian 11.
Any clues?