When changing a wordpress' running domain to another DH user, I started getting many "permission denied" errors.
It seemed related to wordpress supercache settings.
To fix this, find wp-config.php and look for the following line:
[php]define( 'WPCACHEHOME', '/home/user/domain/wp-content/plugins/wp-super-cache/' ); //Added by WP-Cache Manager[/php]
Surely the [color=#FF0000]user[/color] and [color=#FF0000]domain[/color] will be different for each case.
Just update the [color=#FF0000]user[/color] with the actual value and save wp-config.php. This was still pointing to the old former running user config.
Not really a big deal but maybe this is a untested scenario from DH scripts.
Hope this can help people having the same issue.