[support] Multisite setup for a subdomain

[Albert Cuesta]

Hi

I have a working Drupal 4.7 site at www.mydomain.com (no, I can't  
move to 5.x yet) and now I want to add a second site at  
subdomain.mydomain.com. I have set up the required directories as  
follows:

public_html/
public_html/default (settings.php for the the main site)
public_html/sites
public_html/sites/subdomain.mydomain.com (settings.php for the new site)
public_html/sites/subdomain.mydomain.com/files
public_html/sites/subdomain.mydomain.com/modules
public_html/sites/subdomain.mydomain.com/themes

As I'm using cPanel, I have followed the instructions at http:// 
drupal.org/node/125539#comment-208916, so the symbolic link for is  
created and seems to be pointing to the root.

However, when I point my browser to subdomain.mydomain.com for  
installing, I only get a 500 Internal Server Error.

Can somebody tell me what am I doing wrong?

Thank you in advance

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Albert Cuesta