possible htaccess issue

Hello all,

I followed the directions for enabling multisite and created the subdomain: blog.taplanners.com on Blue Host. However, I get a 500 error when I try to access WP-admin. The Apache server logs say:

[Sun Mar 16 10:39:13 2014] [error] [client 69.201.169.197] Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
[Sun Mar 16 10:39:13 2014] [error] [client 69.201.169.197] Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.

That leads me to believe there’s an issue with htaccess. My file reads:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
</IfModule>

# END WordPress

The previous version had this difference:

# Use PHP54 Single php.ini as default
AddHandler application/x-httpd-php54s .php

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

# END WordPress

Does anyone have an idea of what’s wrong?

Thanks!