Events Total Photos Allowed error

Hi
I have tried to add limated photos on my events but i get this error
COM_EASYSOCIAL_ACCESS_EVENTS_PHOTOS_TOTAL_PHOTOS_SUFFIX
COM_EASYSOCIAL_ACCESS_EVENTS_PHOTOS_TOTAL_PHOTOS_SUFFIX

Also this error in file
COM_EASYSOCIAL_ACCESS_EVENTS_FILES_TOTAL_FILES_SUFFIX


Also can you please where can i change the setting to
only event owner can add
Polls on event not other users


thanks