Alexander,

The issue you are experiencing with the "/var/home/admin" error message is related to Bug #820968. To resolve this issue perform the following on each node in the cluster:

1. Login to systemshell:
   Note: You might need to unlock the diag account. For more information, see 1012484: Data ONTAP 8: How to unlock the diag user account
   ::> set diag
::*> systemshell -node <node_name>
% cd /var/home
% sudo mkdir diag
% sudo mkdir admin
% sudo chown diag:nogroup diag
% sudo chown admin:nogroup admin