Here's the site:
http://www.hwsflegal.com/

(1) Tried to fix an issue where I kept getting "no input file specified". It's hosted at GoDaddy. Finally managed to fix a lot of it by added this to /config/site.php:

define('SERVER_PATH_VARIABLE', 'REQUEST_URI');

(2) The login page didn't work, so I had to add all this nonsense to my .htaccess:

addhandler x-httpd-php-cgi .php4
addhandler x-httpd-php5-cgi .php
addhandler x-httpd-php5-cgi .php5

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteRule ^(_app) - [F,L]
RewriteRule ^(_config) - [F,L]
RewriteRule ^(_content) - [F,L]
RewriteRule ^(.*).yml$ - [F,L]
RewriteRule ^(.*).yaml$ - [F,L]
RewriteRule ^(.*).html$ - [F,L]
RewriteRule ^(.*/)?\.git+ - [F,L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php [QSA,L]
</IfModule>
# -- concrete5 urls start --
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME}/index.html !-f
RewriteCond %{REQUEST_FILENAME}/index.php !-f
RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>
# -- concrete5 urls end --

Now I can log in, but...

(3) The edit bar on the pages comes up blank. I can see the background, but nothing else. I haven't modified the css. The Dashboard works fine in general.

(4) When I go into the full site map, a "Page not found" error comes up every time I try to click on one of the links. And when I try to expand a node, the page just hangs / loads forever.

(5) There is also a mobile theme that doesn't work at all anymore. Keep getting "Page not found" message.

I'd like to disable this and other add-ons, but will it get rid of all my settings on each page?

I looked through most of the posts here about these weird issues and I can't seem to find a solution. The site just stopped working for my client last week. Very strange. With all these issues, I may have to do a re-install or something similar. I hope not though.

Thanks for any help!