php5 upgrade cant access admin to login

Hi i upgraded to php5 and inserted the correct code into .htaccess to force to use php5 now my site works in all its glory i just cannot lgoin to the admin screen when i click on login i get no input file specified http://www.spotcream.com/wp-admin/

My .htaccess file from my main www folder where wp is installed is as follows

# BEGIN W3 Total Cache
<IfModule mod_setenvif.c>
SetEnvIfNoCase Accept-Encoding (gzip) APPEND_EXT=.$1
</IfModule>
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} \/$
RewriteCond %{REQUEST_URI} !(\/wp-admin\/|\/xmlrpc.php|\/wp-(app|cron|login|register).php|wp-.*\.php|index\.php) [OR]
RewriteCond %{REQUEST_URI} (wp-comments-popup\.php|wp-links-opml\.php|wp-locations\.php) [NC]
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} =””
RewriteCond %{HTTP_COOKIE} !(comment_author|wp-postpass|wordpress_\[a-f0-9\]\+|wordpress_logged_in) [NC]
RewriteCond %{HTTP_USER_AGENT} !(bot|ia_archive|slurp|crawl|spider) [NC]
RewriteCond /home/PRIVATE/public_html/wp-content/w3tc/pgcache/$1/_default_.html%{ENV:APPEND_EXT} -f
RewriteRule (.*) wp-content/w3tc/pgcache/$1/_default_.html%{ENV:APPEND_EXT} [L]
</IfModule>
# END W3 Total Cache

<Limit GET POST>
order deny,allow
deny from all
allow from all
</Limit>
<Limit PUT DELETE>
order deny,allow
deny from all
</Limit>
AuthName spotcream.com
AuthUserFile /home/PRIVATE/public_html/_vti_pvt/service.pwd
AuthGroupFile /home/PRIVATE/public_html/_vti_pvt/service.grp

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

</IfModule>

# END WordPress
# Add Expires headers
# ExpiresActive On
# ExpiresDefault \”access plus 5 days\”
# ETags
FileETag none
# WP-AVOID-SLOW END
AddType x-mapp-php5 .php