Compile issue for SuperCollider IDE on Arch

I have recently recompiled SuperCollider against updated boost-libs and Qt6 on ArchLinux kernel 6.11.8-arch1-2 and have run into an issue. When I click on the Quarks menu item in the IDE I’m getting:

ERROR: Primitive '_QObject_InvokeMethod' failed.
Failed.
RECEIVER:
Instance of TreeView {    (0x5a3f1f3acb48, gc=84, fmt=00, flg=00, set=06)
  instance variables [36]
    qObject : RawPointer 0x5a3f18dbe880
    finalizer : instance of Finalizer (0x5a3f1f5eb868, size=2, set=1)
    virtualSlots : instance of Array (0x5a3f1ee5ea78, size=2, set=2)
    wasRemoved : false
    font : nil
    resize : Integer 1
    alpha : Float 1.000000   00000000 3FF00000
    decorator : nil
    layout : nil
    userCanClose : true
    deleteOnClose : true
    action : nil
    mouseDownAction : nil
    mouseUpAction : nil
    mouseEnterAction : nil
    mouseLeaveAction : nil
    mouseMoveAction : nil
    mouseOverAction : nil
    mouseWheelAction : nil
    keyDownAction : nil
    keyUpAction : nil
    keyModifiersChangedAction : nil
    keyTyped : nil
    focusGainedAction : nil
    focusLostAction : nil
    dragLabel : nil
    beginDragAction : nil
    canReceiveDragHandler : nil
    receiveDragHandler : nil
    toFrontAction : nil
    endFrontAction : nil
    onClose : nil
    onResize : nil
    onMove : nil
    itemPressedAction : instance of Function (0x5a3f1ee5f9c8, size=2, set=2)
    onItemChanged : instance of Function (0x5a3f1ee5e8b8, size=2, set=2)
}
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 TreeView>
	TreeView:addItem
		arg this = <instance of TreeView>
		arg strings = [*5]
	QuarkRowView:init
		arg this = <instance of QuarkRowView>
		arg parent = <instance of TreeView>
		arg aQuark = <instance of Quark>
		arg qg = <instance of QuarksGui>
	< FunctionDef in Method QuarksGui:update >
		arg quark = <instance of Quark>
		var qrv = nil
		var lp = "/home/xxxxxx/.local/sh..."
	ArrayedCollection:do
		arg this = [*274]
		arg function = <instance of Function>
		var i = 0
	QuarksGui:update
		arg this = <instance of QuarksGui>
		var recompile = false
	QuarksGui:init
		arg this = <instance of QuarksGui>
		var bounds = <instance of Rect>
		var btnUpdateDirectory = <instance of Button>
		var btnQuarksHelp = <instance of Button>
		var btnInstallFolder = <instance of Button>
		var btnOpenFolder = nil
		var btnClear = <instance of Button>
		var btnLoad = <instance of Button>
		var btnSave = <instance of Button>
	Interpreter:interpretCmdLine
		arg this = <instance of Interpreter>
	Process:interpretCmdLine
		arg this = <instance of Main>
^^ The preceding error dump is for ERROR: Primitive '_QObject_InvokeMethod' failed.
Failed.
RECEIVER: a TreeView

Any suggestions what might be going on would be appreciated. Thx