Warning: The home dir /var/lib/zentyal/ you specified already exists.
Adding system user `ebox' (UID 123) ...
Adding new user `ebox' (UID 123) with group `ebox' ...
The home directory `/var/lib/zentyal/' already exists.  Not copying from `/etc/skel'.
adduser: Warning: The home directory `/var/lib/zentyal/' does not belong to the user you are currently creating.
Adding user `ebox' to group `adm' ...
Adding user ebox to group adm
Done.
dpkg: error processing zentyal-core (--configure):
 subprocess installed post-installation script returned error exit status 2
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Processing triggers for ureadahead ...
Errors were encountered while processing:
 zentyal-core
E: Sub-process /usr/bin/dpkg returned an error code (1)