Error while downloading "map share" to tom tom 340s

Here is the error that was given while downloading "map share" update for my 340s Tom Tom device. Thanks in advance for the help:

ERROR: There is not enough free space on your device to add the item. You need to remove: 4.1 Mb
Stack:
0. chrome://tthome/content/ui/bindings/commit.js:82
error(textOrException);
1. chrome://tthome/content/ui/bindings/ttwizard.xml:1058
this._commitFailed(i, commitPage);
2. chrome://tthome/content/logic/util.js:79
return func.apply(obj, arguments);
3. chrome://tthome/content/logic/model/ttNavItem.js:924
errorCallback(errorStrOut.value);
4. chrome://tthome/content/ui/subtask/installSelectSome/installSelectSome.js:740
errorCallback);
5. chrome://tthome/content/logic/util.js:79
return func.apply(obj, arguments);
6. function _startCommitFunction chrome://tthome/content/ui/bindings/ttwizard.xml:1054
{
7. chrome://tthome/content/ui/bindings/ttwizard.xml:1042
}
8. chrome://tthome/content/logic/util.js:79
return func.apply(obj, arguments);
9. chrome://tthome/content/ui/subtask/installSelectSome/installSelectSome.js:683
"downloadedItems", [item.name], 1));
10. chrome://tthome/content/logic/util.js:79
return func.apply(obj, arguments);
11. chrome://tthome/content/logic/model/ttNavItem.js:706
aSuccessCallback(result);

Time: Tue, 22 Sep 2009 23:42:02 GMT