htaccess redirect, now can’t access admin panel

Hi Everyone
I recently did an htaccess redirect of my wp site, making the http:// myaddress.com go to http:// www .myaddress.com (added spaces to remove link) . The redirect itself works, but now I cannot access the admin panel. I’ve reverted to the original htaccess file and still can’t access it.All it shows is a blank page.

here is the original htaccess:

# Use PHP5 as default
AddHandler application/x-httpd-php5 .php

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

my modified htaccess:

# Use PHP5 as default
AddHandler application/x-httpd-php5 .php

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

# END WordPress

RewriteCond %{HTTP_HOST} ^myaddress.com.com
RewriteRule (.*) http://www.myaddress.com/$1 [R=301,L]

Any help would be greatly appreciated!!