URL getting server error on first load working fine on second load

Hey guys,

My site is https://diablo-3-news.org and I am having some issues with getting my index page to load. First off i installed word press fresh and created a new database installed my theme and created some posts but it seemed that when you tried to access the url it gave a
“Server error The website encountered an error while retrieving https://www.diablo-3-news.org/. It may be down for maintenance or configured incorrectly.Here are some suggestions: Reload this web page later. HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfil the request.”

Error, so i did some searching around and ended up creating a .htaccess file and using:
DirectoryIndex index.html index.htm index.php
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Now waht happens is when you first enter the url you get the server error but if you renter the url it laod up my index page…..

any idea on why it wont jsut load it up the first time you put in the url?

cheer