Uncaught type error : object [object object ] has no method captify

Uncaught type error : object [object object ] has no method captify

Hi,

i am using this code in one of my wordpress theme for slider but when i activated one plugin i got this error
jQuery( document). ready( function(){
jQuery( 'img.captify'). captify({
Uncaught TypeError: Object [object Object] has no method 'captify'
speedOver: 'fast',
speedOut: 'normal',
hideDelay: 500,
animation: 'slide',
prefix: '',
opacity: '0.7',
className: 'caption-bottom',
position: 'bottom',
spanWidth: '100%'
});
});

please help me to fix this problem

Thanks