Correct this file:
SS_INSTALL_DIRECTORY/framework/model/fieldtypes/HTMLText.php

Change Line ~149:

From:
if(preg_match(‘/<(img|embed|object|iframe)[^>]*>/i’, $this->value)) return true;

To:
if(preg_match(‘/<(img|embed|object|iframe|meta)[^>]*>/i’, $this->value)) return true;