Unable to view site locally

I’ve had no problem installing WP several times on live webservers but I’m having problems doing it on my local machine for an intranet.

After install I can see the admin side of things no problem and everything seems to work fine, but when I click on view site I get a 500 internal error.

So I’ve opened up wp-blog-header.php which seems to be the start of things and through a process of elimination have edited out the line calling the wp() function.

At this point I can see the front page of the site but it shows up the following error in several pages:

Warning: extract() expects first argument to be an array in c:\apache\htdocs\intranet\wp-includes\functions.php on line 2130

Any ideas welcomed.