Hi,
I have two problem with my code;
1.why when I runtree Store.load(); it load twice
2.what's wrong with data1.jpg's data?why don't show anything when i use it;
and why throws error when i use data2.jpg's data?

thank you ..

Code:
this.feedPanel = Ext.create('Ext.tree.Panel', {            
            region: 'west',
            id:'core_leftTree',
            rootVisible: true,
            title:'IMANAGER',
            collapsible: true,
            width: 225,
            floatable: false,
            split: true,
            minWidth: 175,
            maxWidth:360
        });
Code:
var tree = Ext.getCmp("core_leftTree");
        var treeStore = tree.getStore();
        
        if(null != tree.getRootNode()){
            tree.removeAll(true);
        }
            
        treeStore.setProxy({ type: 'ajax',method:'post',url: url,reader:{type:"json"}});
        treeStore.load();
data1.jpg
data1.jpg
data2.jpg
data2.jpg