Looking at the source of your wiki page, all the references are to /wiki/lib/exe/ rather than /lib/exe/
For example, in the headers it refers to /wiki/lib/exe/css.php - from the base of
http://www.sdmband.com/wiki/ this is referring to
http://www.sdmband.com/wiki/wiki/lib/exe/css.php - too many wikis in that address!
This is maybe why you get the error message at the end of the page too.
Have you changed baseurl or basedir in your conf/local.php? Sometimes the automatic detection doesn't work out as planned.
HTH,
Ben