New install, htaccess problem / infinite loop

I have done an install of WP 3.5 and manually added the Network option. It is installed in this directory:
http://www.uitdragerij.nl/wp/

However, I cannot access the dashboard of subsites. I get the error 310 ERR_TOO_MANY_REDIRECTS.

Also, the theme of the subsite is not loaded properly. An example subsite is created here:
http://www.uitdragerij.nl/wp/eva

I think these issues are caused by .htaccess settings.

This is in my config file:
/* Multisite */
define(‘WP_ALLOW_MULTISITE’, true);
define(‘MULTISITE’, true);
define(‘SUBDOMAIN_INSTALL’, false);
define(‘DOMAIN_CURRENT_SITE’, ‘www.uitdragerij.nl’);
define(‘PATH_CURRENT_SITE’, ‘/wp/’);
define(‘SITE_ID_CURRENT_SITE’, 1);
define(‘BLOG_ID_CURRENT_SITE’, 1);

And these are my .htaccess settings:

RewriteEngine On
RewriteBase /wp/
RewriteRule ^index\.php$ – [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).*) usr/home/deb22464n2/domains/uitdragerij.nl/public_html/wp/$2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ usr/home/deb22464n2/domains/uitdragerij.nl/public_html/wp/$2 [L]
RewriteRule . index.php [L]

Does anyone have suggestions what to try?