I installed your wiki plugin on my site and am having problems getting the custom sidebar to show up on the wiki pages themselves. I added wiki elements to a sidebar widget but when I create a wiki page I have no option to select the created sidebar. I can't select a sidebar period.
I can do so on a regular page: http://monitoringsafewater.org/test-3/
But not for a wiki page: http://monitoringsafewater.org/wiki/test-2/