A problem with embedding prezis

To add to my research I have created some detailed presentations using the online service called prezi. This allows me to create more interesting and engaging presentations however I have come across a problem when trying to embed them into posts. After I have embedded the code into the post the prezi becomes invisible and cannot be seen. I am going to look into this and work away around it as I think the prezis are very effective at delivering critical background information to noir.