Video Embeding problem in Single Posts

I am having a odd problem with video plugins which only seem to affect Single post pages, I've tried Smartyoutube and Videoquick tags.

my page: http://cnprobe.com/wordpress

During my testing both seem to work within Pages, see bottom of Contact page. but not within any single posts, see the video testing post.

Any help as why this is happening would be greatly apperciated