Hello, I'm having this problem when editing my K2 items from the backend, the content areas (description and extra fields) are not displaying properly. I'm not really sure why is this happening... any ideas?

Please tell us what versions of j and k2 u are using.
Check your javascript settings in the layout tab of k2 options

Hello William, I'm using Joomla! 2.5.7 and K2 v2.5.7, I had problems after the K2 v2.6.0 update so I had to go back to the previous version to fix it.