supercollider - Tidal の SuperCollider に Dirt-Samples クォークをインストールする際の問題

Question

Tidalをインストールしようとしていますが、SuperCollider 3.6.6 に Dirt-Samples クォークをインストールする際に問題が発生しています。SuperDirtリポジトリの指示に従い、SuperDirt、Dirt-Samples、Vowel クォークを ~/.local/share/SuperCollidor/Extensions/quarks/ に配置しました。Dell Inspiron 3521 で Ubuntu 14.04 を実行しています。

SuperCollider で Quarks.gui を実行しています。クォークのリストでは、Vowel がインストールされているように見え、横に + が表示されますが、Dirt-Samples と SuperDirt には - が横に表示されます。Dirt-Samples を選択してその横に * を表示し、[適用] をクリックすると、SuperCollidor IDE で次のエラーが発生します。

ARGS:
   Character 47 '/'

PROTECTED CALL STACK:
    Meta_MethodError:new    0x3c794c0
            arg this = DoesNotUnderstandError
            arg what = nil
            arg receiver = nil
    Meta_DoesNotUnderstandError:new 0x3c7b480
            arg this = DoesNotUnderstandError
            arg receiver = nil
            arg selector = split
            arg args = [ / ]
    Object:doesNotUnderstand        0x2adebc0
            arg this = nil
            arg selector = split
            arg args = nil
    a FunctionDef   0x2fa4900
            sourceCode = "<an open Function>"
            arg oneq = Quark: Dirt-Samples
    ArrayedCollection:do    0x3b8fe80
            arg this = [ Quark: Dirt-Samples ]
            arg function = a Function
            var i = 0
    QuarkSVNRepository:checkout     0x2fa43c0
            arg this = a QuarkSVNRepository
            arg q = Quark: Dirt-Samples
            arg localRoot = /home/nathan/.local/share/SuperCollider/quarks
            arg sync = true
            var subfolders = nil
            var fullCheckout = [  ]
            var pathSoFar = nil
            var skeletonCheckout = [  ]
            var args = nil
    Quarks:checkout 0x3907d00
            arg this = a Quarks
            arg name = Dirt-Samples
            arg version = nil
            arg sync = true
            var q = Quark: Dirt-Samples
    Quarks:install  0x3909ac0
            arg this = a Quarks
            arg name = Dirt-Samples
            arg includeDependencies = true
            arg checkoutIfNeeded = true
            var q = nil
            var deps = nil
            var installed = nil
            var dirname = nil
            var quarksForDep = nil
    a FunctionDef   0x39da400
            sourceCode = "<an open Function>"
            arg qView = a QuarkViewQt
    ArrayedCollection:do    0x3b8fe80
            arg this = [ a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, a QuarkViewQt, ...etc...
            arg function = a Function
            var i = 92
    Function:prTry  0x2dc7300
            arg this = a Function
            var result = nil
            var thread = a Thread
            var next = a Function
            var wasInProtectedFunc = true
    Function:protect        0x2dc6880
            arg this = a Function
            arg handler = a Function
            var result = nil
    a FunctionDef   0x2d870c0
            sourceCode = "<an open Function>"
    Function:prTry  0x2dc7300
            arg this = a Function
            var result = nil
            var thread = a Thread
            var next = nil
            var wasInProtectedFunc = false

CALL STACK:
    DoesNotUnderstandError:reportError   0x4d51268
            arg this = <instance of DoesNotUnderstandError>
    < closed FunctionDef >   0x4d48418
            arg error = <instance of DoesNotUnderstandError>
    Integer:forBy   0x468a6d8
            arg this = 0
            arg endval = 0
            arg stepval = 2
            arg function = <instance of Function>
            var i = 0
            var j = 0
    SequenceableCollection:pairsDo   0x49be958
            arg this = [*2]
            arg function = <instance of Function>
    Scheduler:seconds_   0x2a7cbd8
            arg this = <instance of Scheduler>
            arg newSeconds = 1470285930.1456
    Meta_AppClock:tick   0x3ec45a8
            arg this = <instance of Meta_AppClock>
            var saveClock = <instance of Meta_SystemClock>
    Process:tick   0x465a508
            arg this = <instance of Main>
^^ The preceding error dump is for ERROR: Message 'split' not understood.
RECEIVER: nil

この「分割」エラーの原因がわかりません。ここから SuperCollider で SuperDirt.start を実行できるようになるための助けをいただければ幸いです。ありがとう！