Users cannot get past login page. Website returns an invalid email/password message.

[eluser]charleslittle.tx[/eluser]
.htaccess file:

Options +FollowSymLinks
RewriteEngine On
RewriteBase /

RewriteRule ^$ index.php [L]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond $1 !^(index\.php|robots\.txt|favicon\.ico)

RewriteRule ^(.*)$ index.php/$1 [L]

The links are working so I don't think it is a rewrite issue.