Restore for Hot Standby: could not restore file return code 32256

Hi,

I'm running Postgresql 9.2 on SLES 11 (Suse Enterprise). I want to use the
archived WALs for a PITR Backup and a Hot Standy server. So I did a
file-system based backup and let the main server archive all its WALs in an
extra archive. This is working fine. Now i want to restore the backup to
use it for a Hot Standby Server.

I got following configurations:

main server:
wal_level = hot_standby
archive_mode = on
archive_command = 'cp ........'

standby:
wal_level = hot_standby
hot_standby = on

recovery.conf on standby:
restore_command = '/path/archive/%f %p'
standby_mode = on

Now i can''t start the standby and receive following message in the logs:
2014-03-13 13:16:47 UTC LOG: database system was interrupted; last known
up at 2014-03-12 17:26:50 UTC
2014-03-13 13:16:47 UTC LOG: entering standby mode
sh: /pgsql-replication/archive/00000001000001FE00000052: Permission denied
2014-03-13 13:16:47 UTC FATAL: could not restore file
"00000001000001FE00000052" from archive: return code 32256
2014-03-13 13:16:47 UTC LOG: startup process (PID 16806) exited with
exit code 1
2014-03-13 13:16:47 UTC LOG: aborting startup due to startup process
failure

I checked the path and the permissions for postgres to write and read in
the directory where the wals are written in. It should work. I could copy
the file-backup a postgres user from a directory with the same permissions.

1.Is there something I missed?
2. Do I need to use archive_mode = on and archive_command on the Hot
Standby too?

Thanks for any help or suggestions,

Gaby