Cordova 3.4.0上的FileSystem失败“无法创建目标文件”

升级后文件系统访问被破坏. (虽然似乎在模拟器中工作？)

我收到一条错误消息,指出“无法创建目标文件”,我google了一下,并考虑将我的“完整路径”更改为“toURL()”,但无济于事.我真的不知道下一步该尝试什么？

这是我的下载代码

window.requestFileSystem(
LocalFileSystem.PERSISTENT,function onFileSystemsuccess(fileSystem) {
fileSystem.root.getFile(
    "dummy.html",{
    create: true,exclusive: false
},function gotFileEntry(fileEntry) {
    var sPath = fileEntry.toURL().replace("dummy.html","");
    var fileTransfer = new FileTransfer();
    fileEntry.remove();

    fileTransfer.download(
        "https://dl.dropBox.com/u/13253550/db02.xml",sPath + "database.xml",function (theFilE) {
        console.log("download complete: " + theFile.toURI());
        showLink(theFile.toURI());
        setTimeout(function () {
            checkConnection();
        },50);
    },function (error) {
        console.log("download error source " + error.sourcE);
        console.log("download error target " + error.target);
        console.log("upload error code: " + error.codE);
    });
},fail);
},fail);