I am getting
[Tue Apr 24 12:12:55 2012] [error] [client 127.0.0.1] client denied by server configuration: /labs/Projects/Nebula/bin/
I had this issue using Vesta CP and for me, the trick was remove .htaccess and try to access to any file again.
That resulted on regeneration of .htaccess file and then I was able to access to my files.