Magento: TinyMCE not displayed / Shows error

I was working with a custom Magento module. I had to display TinyMCE editor in an admin form field. I was getting this error when I try to add/edit data from the custom module:- Warning: Invalid argument supplied for foreach() in lib\Varien\Data\Form\Element\Editor.php on line 225 I tried some workaround and was able to see the … Read more