Kettercat on "500 Internal Server Error & moving site"

Hey everyone,

To be honest I'm completely hopeless at the moment.
I've been trying work out what's wrong with my site for the past 24 hours and nothing seems to help (and my host - Godaddy - are not very useful either to say the least).

I am trying to move one site to a different server and nothing seems to work - I have installed about 6 different plugins and each one of them gives me a 500 Inteal Server Error with no specific details what's causing it. Godaddy say it's a plugin issue but it happens with every plugin, and what's more - even when I update the WP core or basically everything else.
I have tried disabling all plugins (except the duplicating site ones that I was using each time) but it didn't help.

I have found another post regarding this suggest I add this code to my .htaccess:
AddType x-mapp-php5 .php
But it didn't help either.

What can I do? Is there any other way I can move my site completely, all settings & files included?

Help :(

Hey brother you can follow the steps of this link.

Hey, thanks - I'll try that, I'm trying to avoid moving the databases myself.

Here's an error message I just received, maybe this will help:

PHP Waing: mysql_query(): MySQL server has gone away in G:PleskVhosts(site's url)wp-includeswp-db.php on line 1813
PHP Waing: mysql_query(): Error reading result set's header in G:PleskVhosts(site's url)wp-includeswp-db.php on line 1813`