Images are not loading in any prezi with Error message: Some media files couldn't be loaded in the prezi, please refresh your browser

Hi, images are not loading in my prezi (http://prezi.com/dudxzzbkn5hf/the-one-child-one-light-ocol-programme/) or any prezi for that matter with the above error message. I have tried all the suggestions such as reloading the page, clearing browser cache and trying again, adding exceptions as mentioned in https://getsatisfaction.com/prezi/topics/why_have_my_images_disappeared. I have upgraded to the latest flash player and all my browsers are up to date including Chrome. Could you please help me find a solution to this issue or point me in the right direction?
I am currently using the free account.

Thanks.