Gallery2 for D6 Initial User Synchronization test not ok...

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.

why /.htaccess/index.php?
I don't have au folder /.htaccess...
or it's /.htaccess and /index.php
but my permissiosn are good for these files...

Any ideas?

Thanks