ThemeMyLogin front page error

Hi everyone,

I am just installed the ThemeMyLogin plugin in my blog and the home page don’t charge correctly! FireFox give me the following output:

The page isn’t redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

* This problem can sometimes be caused by disabling or refusing to accept cookies.

Safari can’t open the page.
Too many redirects occurred trying to open “this page”. This might occur if you open a page that is redirected to open another page which then is redirected to open the original page.

in my htaccess file only appear WordPress code:

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

please help!