This tut will help you replace K2 Gallery Joomlaworks by YOOgallery.You still need install Simple Image Gallery to active Gallery function in K2.jooblogs.com/index.php?option=com_k2&view=item&id=6:instead-k2-gallery-joomlaworks-by-yoogallery

Have updated content . Sorry my website also have use YOOgallery that action on string.
Also you can check live demo and present for JOOmultiblog:
jooblogs.com/index.php?option=com_k2&view=item&id=8:whats-joomultiblog

Hello,

I can't find your tutorial anymore...

Could you tell me where I can get it ?

Hoping for answers,

Best regards,

David aka Shapes