Problem with caurina.transition

Hi guys hope that im the right place and you can help me.
im trying to use the caurina.transitions.Tweener.addTween.
my folder looks like this
www.~~~~~#.com main folder :main fla with swf’s to be loaded
:all #.as files
:folder caurina/-/transitions
:com folder
So i think i have my folder organised correctly, however when i got to run my main fla it comes up with errors here is one off them

ImageGallery.as, line27 There is no class or package with the name ‘caurina.transitions.Tweener’ found in package ‘caurina.transitions’.
caurina.transitions.Tweener.addTween(overlay, {_alpha: 70, time: 1});

And it looks like everywhere there is caurina in all my .as files there is this error message.
i appologise if this is a dumb question.
any help would be greatly appreciated.
Many Thanks