HTML5: Filesystem API Chrome 30

[VapoRizer]

I need to save some files to a persistent local file system. A week ago I started a thread on stackexchange on this topic. Hopefully I can find some experts here:

 

I have following code in my app.js:

function onInitFs(fs) {    aGlobalFsRoot = fs.root;    console.log('04Position');    alert("Welcome to Filesystem! It's showtime :)"+fs); // Just to check if everything is OK }function openFS() {navigator.webkitPersistentStorage.requestQuota (1*1024*1024, function(grantedBytes) {  console.log ('test1');  reqFS(grantedBytes);}, errorHandler);}function reqFS(grantedBytes) {  window.webkitRequestFileSystem(window.PERSISTENT, grantedBytes, function(fs) {    console.log ('test2');    alert("Welcome to Filesystem! It's showtime :)"+fs); // Just to check if everything is OK   }, errorHandler);}function errorHandler(e) {  var msg = '';  switch (e.code) {    case FileError.QUOTA_EXCEEDED_ERR:      msg = 'QUOTA_EXCEEDED_ERR'+e;      break;    case FileError.NOT_FOUND_ERR:      msg = 'NOT_FOUND_ERR'+e;      break;    case FileError.SECURITY_ERR:      msg = 'SECURITY_ERR z.B. Speicherplatz wurde abgelehnt.'+e;      break;    case FileError.INVALID_MODIFICATION_ERR:      msg = 'INVALID_MODIFICATION_ERR'+e;      break;    case FileError.INVALID_STATE_ERR:      msg = 'INVALID_STATE_ERR'+e;      break;    default:      msg = 'Unknown Error'+e;      break;  };  console.log('Error: ' + msg);}

openFS is called on pageload. The code is based on this topic (where it also doesn't seem to work for newer versions of chrome). I can't get it to work. All the time, the errorHandler is called. It makes no difference if the filesystem already exists or not. The quota seems to work.

I get two different console logs:

1. When accsess is granted by user:

   Error: Unknown Error[object DOMError] app.js:81

2. When access is denied by user:

   test1 app.js:45 Error: SECURITY_ERR z.B. Speicherplatz wurde abgelehnt.[object FileError] app.js:81

Anyone got this working?