Getting a 500 error with the Domain Access module I use Drupal 7.22 with 7.x-3.9 Domain Access Module for multiple subdomains website.
Making of subdomains works fine, but I cannot access to subfolders on subdomains.


example.com works
example.com/admin/ works
sub.example.com works
sub.example.com/admin/ internal server error 500


This error is showing on every sub-folder (content) in every sub-domain. The root domain is fine with all content. Also, theme changing on sub-domains works fine. Am I missing something in documentation?
To debug WSOD, you need info what exactly went wrong. There is a pretty neat article about fixing them - try to follow it. Around step 2a you should pretty much know what you need to look for in documentation.