pimd1988 on "Tinymce causes 500 error message"

This is the htaccess in the subdir:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /agenda/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /agenda/index.php [L]
</IfModule>

# END WordPress