After Gallery settings -----> You don't have permission to access /.htaccess/index.php on this server

Hello, I'm jsut installing Gallery2 full pack.
All my gallery settings are good except the last one:
Initial User Synchronization

When I click on "Sync users/groups" or "Skyp sync", I have this:

Forbidden

You don't have permission to access /.htaccess/index.php on this server.

But it's in all my website in fact....

After studies:

The addind codes into my .htacess is:

# BEGIN Url Rewrite section
# (Automatically generated. Do not edit this section)

RewriteEngine On

RewriteBase /.htaccess/

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} gallery\_remote2\.php
RewriteCond %{REQUEST_URI} !/.htaccess/index\.php$
RewriteRule . - [L]

RewriteCond %{THE_REQUEST} /.htaccess/d/([0-9]+)-([0-9]+)/([^/?]+)(\?.|\ .)
RewriteCond %{REQUEST_URI} !/.htaccess/index\.php$
RewriteRule . /sites/all/modules/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=%1&g2_serialNumber=%2&g2_fileName=%3 [QSA,L]
RewriteCond %{THE_REQUEST} /.htaccess/v/([^?]+)\.davmount(\?.|\ .)
RewriteCond %{REQUEST_URI} !/.htaccess/index\.php$
RewriteRule . /.htaccess/index.php?q=gallery&g2_view=webdav.DownloadDavMount&g2_path=%1 [QSA,L]
RewriteCond %{THE_REQUEST} /.htaccess/w(/[^?]*)?(\?.|\ .)
RewriteCond %{REQUEST_URI} !/.htaccess/index\.php$
RewriteRule . /.htaccess/index.php?q=gallery&g2_controller=webdav.WebDav&g2_path=%1 [QSA,L]
RewriteCond %{THE_REQUEST} /.htaccess/v/([^?]+)(\?.|\ .)
RewriteCond %{REQUEST_URI} !/.htaccess/index\.php$
RewriteRule . /.htaccess/index.php?q=gallery&g2_path=%1 [QSA,L]

# END Url Rewrite section

If I take off the adding codes, my website works fine but Gallery settings are not set anymore...

I don't know what I have to do...

Any ideas?

Thanks^^

sorry for my english