Hi,
I found some missing/wrong strings on the language file while i did spanish translation.

Here you have:

***** Missing admin en-GB.com_k2.ini *****

WRITE A TAG AND PRESS "RETURN" OR "COMMA" TO ADD IT.
NOTICE: PLEASE INSTALL JOOMLAWORKS SIMPLE IMAGE GALLERY (FREE/PRO) PLUGIN IF YOU WANT TO USE THE IMAGE GALLERY FEATURES OF K2!
NOTICE: PLEASE INSTALL JOOMLAWORKS ALLVIDEOS PLUGIN IF YOU WANT TO USE THE VIDEO FEATURES OF K2!

***** Wrong admin en-GB.com_k2.ini *****
CHECK THIS BOX TO DELETE CURRENT VIDEO OR USE THE FORM ABOVE TO REPLACE THE EXISTING ONE
CORRECT:USE THE FORM ABOVE TO REPLACE THE EXISTING VIDEO OR CHECK THIS BOX TO DELETE CURRENT VIDEO

***** Missing site en-GB.com_k2.ini *****

WRITE A TAG AND PRESS "RETURN" OR "COMMA" TO ADD IT.
NOTICE: PLEASE INSTALL THE SIMPLE IMAGE GALLERY (FREE/PRO) PLUGIN IF YOU WANT TO USE THE IMAGE GALLERY FEATURES OF K2!
NOTICE: PLEASE INSTALL THE ALLVIDEOS PLUGIN IF YOU WANT TO USE THE VIDEO FEATURES OF K2!
NO ONE HAS COMMENTED ON YOUR PUBLISHED ITEMS SO FAR.


Rgds