broken links to static pages in MS subfolder

Greetings,

I’m not particularly experienced in WordPress but have built a couple of websites.

I have made a fresh installation and activated multi-site with subfolders (both manually and with the plugin multi-site enabler).

The main site (borgstromsforlag.se) works fine. But I have problem with links to static pages in the menu in the child site (borgstromsforlag.se/energinsmysterier). It is impossible to navigate to the pages. The menu doesn’t find the pages (om boken, kapitel, lankar, foton, etc). I have of course created these pages but the menu leads to a “noting found”. I assume there must be something wrong with the htaccess file or the permalinks structure?

I have scanned the forum, but I can’t find anyone with similar problems. Do you have any ideas of what can be wrong?

Here is my htaccess:

#Made Multi-Site with Multi-Site Enabler 1.5#
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]

RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

And the permalink setting for the child site looks like this:
/%year%/%monthnum%/%day%/%postname%/

This is the upload folder:
C:\xampp\htdocs\borgstromsforlag\wp-content\blogs.dir\2\files\20118

Cheers,
Hakan