Mac os

Salut et merci pour votre réponse
je reformule ma question
Je voudrais installer Tomtom home sur mon mac OS car je possède un GO 720 et un via 135 ( déjà installé sur le Mac avec My tomtom )
Lorsque je veux installer Tomtom home il me signale un message d'erreur
qu'elle est la procédure a suivre
merci d'avance

ERROR: ExceptionWithCustomMessage: Could not create or change the folders
Severity: 1105
-
[Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIPrefBranch.getComplexValue]" nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)" location: "JS frame :: chrome://tthome/content/logic/settings.js :: anonymous :: line 437" data: no]
Stack:
0. chrome://tthome/content/logic/settings.js:430
e));
1. chrome://tthome/content/logic/settings.js:382
this._ensureFoldersExist();
2. chrome://tthome/content/logic/settings.js:348
this._prefsFoldersObserver.start(this.dataDir);
3. chrome://tthome/content/logic/settings.js:251
this._initMisc();
4. chrome://tthome/content/logic/app.js:39
this.settings.start();
5. chrome://tthome/content/ui/mainwin/mainWin.js:45
gApplication.start();
6. function onLoad chrome://tthome/content/ui/mainwin/mainWin.js:15
gMainWindow.start();
7. function onload chrome://tthome/content/ui/mainwin/mainWin.xul:1

CAUSE: [Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIPrefBranch.getComplexValue]" nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)" location: "JS frame :: chrome://tthome/content/logic/settings.js :: anonymous :: line 437" data: no]
in chrome://tthome/content/logic/settings.js:437
Stack:
0. chrome://tthome/content/logic/settings.js:437
|| ((gApplication.settings.isOSMacOSX() && this._prefs.getComplexValue(prefName, CI.nsILocalFile).path.indexOf(".Trash") >= 0)))
1. chrome://tthome/content/logic/settings.js:423
this._tryAndSetFolderPref(key, this._prefToDefaultMap[key]);
2. chrome://tthome/content/logic/settings.js:382
this._ensureFoldersExist();
3. chrome://tthome/content/logic/settings.js:348
this._prefsFoldersObserver.start(this.dataDir);
4. chrome://tthome/content/logic/settings.js:251
this._initMisc();
5. chrome://tthome/content/logic/app.js:39
this.settings.start();
6. chrome://tthome/content/ui/mainwin/mainWin.js:45
gApplication.start();
7. function onLoad chrome://tthome/content/ui/mainwin/mainWin.js:15
gMainWindow.start();
8. function onload chrome://tthome/content/ui/mainwin/mainWin.xul:1

Time: Mon, 02 Sep 2013 05:55:35 GMT