archiving transaction log file failed too many times, will try again later

Hello,
I'm running a barman test system.
Last night there was a Hardware failure.
my postgres.conf looks like

root(at)srv-007:/var/log/postgresql# cat
/etc/postgresql/9.3/barman_recover/postgresql.conf | egrep -v "(^#|^$|^;)"
data_directory = '/var/lib/postgresql/9.3/barman_recover' # use data in
another directory
listen_addresses = '*'
port = 5437
max_connections = 100
wal_level = archive
archive_mode = on
archive_command = false
log_line_prefix = '%t '
log_timezone = 'localtime'
datestyle = 'iso, mdy'
timezone = 'localtime'
lc_messages = 'en_US.iso885915' # locale for system error message
lc_monetary = 'en_US.iso885915' # locale for monetary formatting
lc_numeric = 'en_US.iso885915' # locale for number formatting
lc_time = 'en_US.iso885915' # locale for time formatting
default_text_search_config = 'pg_catalog.english'
root(at)srv-007:/var/log/postgresql#

and the logfile .../postgresql-9.3-barman_recover.log is full of
2014-05-23 10:58:56 CEST LOG: archive command failed with exit code 1
2014-05-23 10:58:56 CEST DETAIL: The failed archive command was: false
2014-05-23 10:58:57 CEST LOG: archive command failed with exit code 1
2014-05-23 10:58:57 CEST DETAIL: The failed archive command was: false
2014-05-23 10:58:58 CEST LOG: archive command failed with exit code 1
2014-05-23 10:58:58 CEST DETAIL: The failed archive command was: false
2014-05-23 10:58:58 CEST WARNING: archiving transaction log file
"00000001000000000000000C" failed too many times, will try again later

How can I fix this?

Thanks,
Basti