Same problem. Using latest WP 4.0.1, Twenty Fourteen, and Wiki plugin 1.1.0.3.
No problems installing or creating wiki pages, can edit, and track changes, but can’t view. It comes up “Not found” using either the pretty permalink or the shortlink.
Have disabled all other plugins and switched to Twenty Thirteen with no change.
Relevant WP directories are rwxr-xr-x
htaccess is WP standard issue:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /wordpress/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wordpress/index.php [L]
</IfModule>
# END WordPress
Any other ideas?