I'm getting the !slideshow_deploy! instead of my slideshow, but not every time. It seems to fail randomly. If you go to http://www.cantusfirm.us, you may see the slideshow on the home page, but if you refresh the page several times, you'll see the !slideshow_deploy! message appear eventually.
I currently have "Avoid Content Filter" enabled, but when I disable it, the page is utterly broken. See this screenshot: http://screencast.com/t/N38mBHiYKZu
I'm using a theme called "Swap".