Hi everyone,
First thanks to Sencha team, Sencha is really a great stuff !

But unfortunately i'm stuck on the thing I thought would be the easiest part
I've made a small web app with Sencha Touch, I store data on local, it works just great.

But I wanted to use Sencha.io as well and couldn't make it work. (I know it's in beta and very fresh product so might be unstable but would like to hear what you think about my issue)
I've changed the type of the proxy : localstorage => syncstorage
I'm using my login as key : jujuo (I've also tried login of others members :-o of the forum without any success)
I've downloaded the sync version of Sencha : sencha-touch-1.2.0-alpha-20110920
But when I use that it gives me a white page without any errors, logs or whatever.
I don't know what to do
of course if I change back syncstorage to localstorage, it works just great.
(I'm using the last version of everything, Xcode, Lion, Phonegap, Sencha touch..)

The thing is that I'm using Phonegap as well, it might have a conflict ?
For you everything work well ?

Ext.regStore('NotesStore', {    model: 'NoteModel',
    sorters: [{
        property: 'date',
        direction: 'DESC'
    proxy: {
//type: 'localstorage',
        id: 'notes-app-store',
        type: 'syncstorage',
        key: 'jujuo'
    getGroupString: function (record) {
        if (record && record.data.date) {
            return record.get('date').toDateString();
        } else {
            return '';

NotesApp.stores.notesStore = Ext.StoreMgr.get('NotesStore');
Here you are my whole store file.

Thank you in advance !

Edit: Sorry for the update, I tried the script without phonegap, same result.