Thread:Semantic-mediawiki.org:Community portal/Demos not working

Hi, I was searching for some result formats and I think some of them are broken or misconfigured, see:
 * Demo:Tagcloud/Basic tagcloud with links (colons appearing)
 * Help:Slideshow format (demo not working)
 * Demo:Listwidget using parameter template (fatal error)
 * Demo:Listwidget using sortkey for display (fatal error)