Can't get into my admin page again…more 500 Internal Server errors….help??

Seems like my little problem of getting into my Red Garter Club Network blogs and network admin pages is back again…I’m getting the same “500 Internal Server error” pages whenever I attempt to go to the admin page.

https://redgarterclub.com/RGClubNetwork/wp-admin/network/index.php

I did read that it may have to do with the .htaccess file that is in my server. Here’s how mine looks like (located in my /public_html/RGClubNetwork directory:

# BEGIN WordPress
# BEGIN WPSuperCache
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /RGClubNetwork/
#If you serve pages from behind a proxy you may want to change 'RewriteCond %{HTTPS} on' to something more sensible
AddDefaultCharset UTF-8
RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteCond %{HTTPS} on
RewriteCond %{DOCUMENT_ROOT}/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index-https.html.gz -f
RewriteRule ^(.*) "/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index-https.html.gz" [L]

RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteCond %{HTTPS} !on
RewriteCond %{DOCUMENT_ROOT}/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index.html.gz -f
RewriteRule ^(.*) "/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index.html.gz" [L]

RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTPS} on
RewriteCond %{DOCUMENT_ROOT}/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index-https.html -f
RewriteRule ^(.*) "/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index-https.html" [L]

RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTPS} !on
RewriteCond %{DOCUMENT_ROOT}/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index.html -f
RewriteRule ^(.*) "/RGClubNetwork/wp-content/cache/supercache/%{SERVER_NAME}/rgclubnetwork/$1/index.html" [L]
</IfModule>

# END WPSuperCache

RewriteEngine On
RewriteBase /RGClubNetwork/
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

# END WordPress

Most of it is added through WP SuperCache, which I do use for all my networks.

I have also investigated my server error_log file, and I keep discovering this series of error code:

‘backticks’
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/magickwand.so’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/magickwand.so: cannot open shared object file: No such file or directory in Unknown on line 0
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/pdo.so’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/pdo.so: cannot open shared object file: No such file or directory in Unknown on line 0
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/pdo_sqlite.so’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/pdo_sqlite.so: cannot open shared object file: No such file or directory in Unknown on line 0
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/sqlite.so’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/sqlite.so: cannot open shared object file: No such file or directory in Unknown on line 0
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/pdo_mysql.so’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/pdo_mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0
[01-Jan-2013 20:11:38] PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-zts-20060613/ixed.5.2.lin’ – /usr/local/lib/php/extensions/no-debug-zts-20060613/ixed.5.2.lin: cannot open shared object file: No such file or directory in Unknown on line 0
‘backticks’

As always, any help would be appreciated. What am I doing wrong to cause this??