ERROR: Message 'at' not understood.
RECEIVER:
   nil
ARGS:
   Symbol 'mainTrig'
PATH: /media/mickey/Transcend/Supercollider files/nupg-lfs/startup-interactive.scd

PROTECTED CALL STACK:
	Meta_MethodError:new	0x55cb33283440
		arg this = DoesNotUnderstandError
		arg what = nil
		arg receiver = nil
	Meta_DoesNotUnderstandError:new	0x55cb33285400
		arg this = DoesNotUnderstandError
		arg receiver = nil
		arg selector = at
		arg args = [ mainTrig ]
	Object:doesNotUnderstand	0x55cb328a4c40
		arg this = nil
		arg selector = at
		arg args = nil
	Meta_Conductor:findSpec	0x55cb343ed900
		arg this = Conductor
		arg name = mainTrig
		var spec = nil
	Meta_Conductor:makeCV	0x55cb343ed480
		arg this = Conductor
		arg name = mainTrig
		arg value = nil
	a FunctionDef	0x55cb343ee8c0
		sourceCode = "<an open Function>"
		arg i = 4
	Integer:forBy	0x55cb34170f00
		arg this = 1
		arg endval = 88
		arg stepval = 1
		arg function = a Function
		var i = 4
		var j = 3
	Conductor:makeArgs	0x55cb343ee380
		arg this = Conductor[ (con_freq -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (preset -> class NullPreset), (con_env -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (player -> a ConductorPlayer), (con_pul -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]) ]
		arg func = a Function
		var argList = [ Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ], Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ], Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ] ]
		var size = 89
		var names = SymbolArray[ conductor, con_pul, con_env, con_freq, mainTrig, mainGrain, mainEnv, mainPan, mainAmp, mainMod, mainRatio, mainFlux, data_0, data_1, data_2, data_3, data_4, speed, min_0, max_0, min_1, max_1, min_2, max_2, min_3, max_3, min_4, max_4, mx_00, mx_01, mx_02, mx_03, mx_10, mx_11, mx_12, mx_13, mx_20, mx_21, mx_22, mx_23, mx_30, mx_31, mx_32, mx_33, mx_40, mx_41, mx_42, mx_43, mx_50, mx_51, mx_52, mx_53, mx_60, mx_61, mx_62, mx_63, freq_0, freq_1, freq_2, freq_3, index_0, index_1, index_2, index_3, l...etc...
		var argNames = [ con_pul, con_env, con_freq, mainTrig ]
		var theClassName = nil
		var name = mainTrig
		var obj = Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]
	Conductor:make	0x55cb343ecbc0
		arg this = Conductor[ (con_freq -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (preset -> class NullPreset), (con_env -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (player -> a ConductorPlayer), (con_pul -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]) ]
		arg func = a Function
		var obj = nil
		var args = nil
		var names = nil
	a FunctionDef	0x55cb3416fc00
		sourceCode = "<an open Function>"
		arg i = 0
	Integer:do	0x55cb3416f000
		arg this = 3
		arg function = a Function
		var i = 0
	Integer:collectAs	0x55cb3416f840
		arg this = 3
		arg function = a Function
		arg class = Array
		var res = [  ]
	a FunctionDef	0x55cb348e90c0
		sourceCode = "<an open Function>"
		arg con = Conductor[ (preset -> a CVPreset), (settings -> a ConductorSettingsGUI), (con_1 -> Conductor[ (con_freq -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (preset -> class NullPreset), (con_env -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (player -> a ConductorPlayer), (con_pul -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]) ]), (con_2 -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (player...etc...
		arg con_1 = Conductor[ (con_freq -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (preset -> class NullPreset), (con_env -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]), (player -> a ConductorPlayer), (con_pul -> Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]) ]
		arg con_2 = Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]
		arg con_3 = Conductor[ (preset -> class NullPreset), (player -> a ConductorPlayer) ]
		var st = 3
	Function:prTry	0x55cb33549c40
		arg this = a Function
		var result = nil
		var thread = a Thread
		var next = nil
		var wasInProtectedFunc = false

CALL STACK:
	DoesNotUnderstandError:reportError
		arg this = <instance of DoesNotUnderstandError>
	Nil:handleError
		arg this = nil
		arg error = <instance of DoesNotUnderstandError>
	Thread:handleError
		arg this = <instance of Thread>
		arg error = <instance of DoesNotUnderstandError>
	Object:throw
		arg this = <instance of DoesNotUnderstandError>
	Function:protect
		arg this = <instance of Function>
		arg handler = <instance of Function>
		var result = <instance of DoesNotUnderstandError>
	Environment:make
		arg this = <instance of Conductor>
		arg function = <instance of Function>
		var result = nil
		var saveEnvir = <instance of Environment>
	Conductor:make
		arg this = <instance of Conductor>
		arg func = <instance of Function>
		var obj = nil
		var args = [*3]
		var names = [*3]
	NuPG_Conductor:conductorInit
		arg this = <instance of NuPG_Conductor>
	< closed FunctionDef >  (no arguments or variables)
	Interpreter:interpretPrintCmdLine
		arg this = <instance of Interpreter>
		var res = nil
		var func = <instance of Function>
		var code = "(
// ~nupgpath = [ Platform...."
		var doc = nil
		var ideClass = <instance of Meta_ScIDE>
	Process:interpretPrintCmdLine
		arg this = <instance of Main>
^^ The preceding error dump is for ERROR: Message 'at' not understood.
RECEIVER: nil