setRenderer() on a grid column broke backend page

Question

Scenario I'm overriding a grid and in the _prepareColumns() I would like to replace a column renderer with custom one.

Because the column already exist I'm using getColumn() and the setRenderer() method, the issue is that this action is breaking the backend page.

I cannot find any exception/report/log ... so I'm a bit lost.

here the code

 protected function _prepareColumns()
    {
        parent::_prepareColumns();
        $this->getColumn('in_products')
            ->setRenderer('MYMODULE/catalog_product_edit_tab_super_config_grid_renderer_checkbox');

        return $this;
    }

Answer 1

Late answer but maybe useful for someone

i have used setData('renderer', '...') instead of setRenderer('...')

this is from observer

$block->getColumn('column_name')->setData('renderer','MyName_MyModule_Block_Adminhtml_Grid_Renderer_Denied');

and Denied.php

<?php
class MyName_MyModule_Block_Adminhtml_Grid_Renderer_Denied extends Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Abstract
{
    public function render(Varien_Object $row)
    {
        return 'some html here';
    }
}