Hi everybody.

I've got a window and a grid, both of them are separate objects made with Ext Designer. I render the grid to the window using the following code:

initComponent: function() {
			new EpicGridxDD({owner:this.owner,dealwith:this.dealwith,id_plan:this.id_plan})
Everything works fine when I work with this window, but things turn bad when I close it and reopen: the columns & fields & data of the grid (I generate them dynamically) appear duplicated.

That's how the window usually appears:

..And that's how it appears when re-opened:

The window does have the closeAction property set to destroy. I believe it works, and I need to re-initialize the grid somehow. If you know a tip to get rid of this error, I will really apreciate. Thanks.