Erreur XAudio2 : peux pas lancer Cube World

Bonjour,
J'ai pris le jeu Cube World mais au lancement il me met ça :
Could not initialize XAudio2. Please make sure the latest DirectX End-User Runtime is installed : http://www.microsoft.com/en-us/download/details.aspx?id=35

Du coup j'ai suivi le lien et j'ai téléchargé le .exe. Le problème c'est que l'installation ne veut pas se faire et me met :
Une erreur système interne s'est produite.
Il me dit de consulter les fichiers DXError.log et DirectX.log et voici DXError (je n'ai pas mis DirectX.log car il est TRES long):
DXError :

--------------------
[07/06/13 02:21:00] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:21:00] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 02:21:44] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:21:44] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 02:24:49] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:24:49] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 02:28:07] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:28:07] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 02:29:54] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:29:54] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 02:44:51] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 02:44:51] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 03:15:37] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 03:15:37] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 03:16:29] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 03:16:29] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 03:20:16] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 03:20:16] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 03:29:35] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 03:29:35] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 17:06:28] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 17:06:28] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 17:12:16] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 17:12:16] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

--------------------
[07/06/13 17:19:50] module: DXWSetup(Mar 30 2011), file: dxwsetup.cpp, line: 229, function: CDXWSetup::InitInstallEngine

    Sections are not initialized.

--------------------
[07/06/13 17:19:50] module: DXWSetup(Mar 30 2011), file: psheets.cpp, line: 705, function: PreinstDlgProc

    CDXWSetup::InitInstallEngine() failed.

Je ne sais plus quoi faire si vous pouviez m'aider.
Merci.