Uncaught TypeError: Cannot read property 'dom' of null

[webarnie]

I am trying to get a window to display after a menu button is clicked. The main window (BillingOptionApplication.ui.js) is a viewport, layout border. I have defined a container in the center region that I want to use to display the windows for the menu options. When I click the button I get the following error:
Uncaught TypeError: Cannot read property 'dom' of null (line 198 BillingOptionApplicationUi.js)
The main window and buttons are defined in BillingOptionApplication.ui.js. The window I am trying to display is defined in returnPremiumInformationWindow.ui.js. I have searched the forum and reviewed the documentation but have not been able to determine the cause of the error or how to get this to work. Could someone tell me the best way to get a window to display in a div?

[jarrednicholls]

Hi webarnie,

Maybe this thread will help, if you're looking to have a window be constrained to a particular element. Some explanation on that thread will also help understand some things. Feel free to check out the attached example.

http://www.sencha.com/forum/showthre...l=1#post567458

[webarnie]

Thank you for responding. I review the posting but cannot access the attachment which is what i really want. When I try to view the attachment, i an prompted to sing in, which i do and then receive a message that i do not have authority to access the forum. Is there some other way I can get the code? Thank you.

[jarrednicholls]

That's weird. Since our site migration, there have been quirky things here and there. Will have to look into that. Here's a public link to download: http://dl.dropbox.com/u/12081268/winexample.zip

[VijayBhaskar]

Uncaught TypeError: Cannot read property 'autoCreated' of null

Hi,

I'm new to Extjs. Up on developing Multi select combo box in a panel i also got the same error.
I go threw the above links but unfortunately they aren't working. Here is my code please tell me the changes
Thanks.

    Ext.Loader.setConfig({enabled: true});Ext.Loader.setPath('Ext.ux', '../ux');
Ext.require([
    'Ext.form.Panel',
    'Ext.ux.form.MultiSelect',
    'Ext.ux.form.ItemSelector',
    'Ext.tip.QuickTipManager',
    'Ext.ux.ajax.JsonSimlet',
    'Ext.ux.ajax.SimManager'
]);
Ext.onReady(function() {
    Ext.tip.QuickTipManager.init();
    function createDockedItems(fieldId) {
        return [
                
                ];
    }


    Ext.ux.ajax.SimManager.init({
        delay: 300,
        defaultSimlet: null
    }).register({
        'Numbers': {
            data: [['123','One Hundred Twenty Three'],
                    ['1', 'One'], ['2', 'Two'], ['3', 'Three'], ['4', 'Four'], ['5', 'Five'],
                    ['6', 'Six'], ['7', 'Seven'], ['8', 'Eight'], ['9', 'Nine']],
            stype: 'json'
        }
    });
    var viewport = Ext.create('Ext.Viewport', {
        layout:"border",
        title:"AbsoluteLayout Container",
        items: [
        {
            layout:"absolute",
            height: 500,
            width: 1200,
            margins: '135 0 0 50',
            renderTo: 'multiselect',
            items:[{
                            xtype: 'multiselect',
                            msgTarget: 'side',
                            name: 'multiselect',
                            id: 'multiselect-field',
                            allowBlank: false,
                            width:310,
                            height:140,
                            x:48,
                            y:55,
                            store:{
                                fields: [ 'number', 'numberName' ],
                                proxy: {
                                    type: 'ajax',
                                    url: 'Numbers',
                                    reader: 'array'
                                },
                                autoLoad: true,
                                valueField: 'number',
                                displayField: 'numberName',
                                value: ['3', '4', '6'],
                                ddReorder: true
                            }
                          }
                    ]
        }
        ]
    });
});