Primitive '_FileLength' failed

[ndr-brt]

Tried to start threnoscope but I get an error I couldn't manage.

OS: Ubuntu 20.10
Supercollider 3.11.1

That's the code I evaluated (line by line)

Quarks.install('<threnoscope path>');

s.boot;

ThrenoScope.new(2);

but a white window appears and a stacktrace on the console:

[ appPath, nil ]
_______________
[ pathtoscalafiles, /home/andrea/.local/share/SuperCollider/threnoscope/scl/ ]
[ pathtouserscalafiles, /home/andrea/.local/share/SuperCollider/threnoscope/scl_user/ ]
[ HUBAPPPATH, nil ]
ERROR: Primitive '_FileLength' failed.
Failed.
RECEIVER:
Instance of File {    (0x55be6b967b38, gc=8C, fmt=00, flg=00, set=02)
  instance variables [1]
    fileptr : nil
}
CALL STACK:
	MethodError:reportError
		arg this = <instance of PrimitiveFailedError>
	Nil:handleError
		arg this = nil
		arg error = <instance of PrimitiveFailedError>
	Thread:handleError
		arg this = <instance of Thread>
		arg error = <instance of PrimitiveFailedError>
	Object:throw
		arg this = <instance of PrimitiveFailedError>
	Object:primitiveFailed
		arg this = <instance of File>
	File:readAllString
		arg this = <instance of File>
		var string = nil
	DroneSynths:initSampleDict
		arg this = <instance of DroneSynths>
		var file = <instance of File>
		var string = nil
	DroneSynths:initDroneSynths
		arg this = <instance of DroneSynths>
		arg loadsamples = false
		arg arghub = <instance of DroneHub>
	ThrenoScope:initThrenoScope
		arg this = <instance of ThrenoScope>
		arg channels = 2
		arg mode = 'perform'
		arg key = "A"
		arg appPath = nil
		var fundamental = 55.0
		var speakers = nil
		var interpreter = nil
		var machines = nil
		var states = nil
		var tuning = 'et12'
		var scale = 'minor'
		var threnoscopeColor = <instance of Color>
		var border = false
		var fullScreen = true
		var bgcolor = <instance of Color>
	Interpreter:interpretPrintCmdLine
		arg this = <instance of Interpreter>
		var res = nil
		var func = <instance of Function>
		var code = "ThrenoScope.new(2);"
		var doc = nil
		var ideClass = <instance of Meta_ScIDE>
	Process:interpretPrintCmdLine
		arg this = <instance of Main>
^^ The preceding error dump is for ERROR: Primitive '_FileLength' failed.
Failed.
RECEIVER: a File

tried also to set the appPath parameter on the constructor, passing the threnoscope path, but the error is the same.

[ndr-brt]

Ok, did a little debug, the problem is here:

threnoscopeSC/DroneSynths.sc

Line 543 in 2acdeaa

string = file.readAllString;

Is this "sampleDict" mandatory? I created an empty _samples.scd file where it's expected to be and everything started correctly.

PS: great work!