Slideshow does not work on a copy of site

Hi,
I have made a copy (testsite) of my site www.dsmm.org , where the Slideshow CK works perfect.
On my testsite( www.test.dsmm.org ) the Slideshow CK does not Work.

I have tried to update joomla and delete extensions I did not use, but it still does not work.

What can be wrong ?!

Hi
first update the slideshow CK module because you are in 1.4.12 instead of 1.4.46
then clear your browser cache and tell me
CEd

Hi CED,
The update and cache clearing did the trick.
Thanx