[3.x, 3.2.0] RowExpander plugin UPDATED - April 5, 2010

[boriss]

In line 203 (in onDestroy) there is an if missing. Comparing the Ext JS 3.2.1 version of the RowExpander with yours I think the onDestroy function should look like this:

if (this.keyNav) {
    this.keyNav.disable();
    delete this.keyNav;
} 
var mainBody = this.grid.getView().mainBody;
mainBody && mainBody.un( 'mousedown', this.onMouseDown, this);