Remote host dead?

Hello,

I'm trying to scan a host with the default policy. The host is alive and 
responding to pings. I got no results when scanning with Nessus 3.2.0 
(Windows). Looking at scan.log (in he "logs" dir), I can see a "remote host 
is dead". But my question is why? If I run nmap against the host, I can see 
unprivileged ports open (>1024) and of course it's responding to ping. I 
also entered 1-65535 in "port scanner range". No luck at all. Am I missing 
something? Perhaps a bug in Nessus?

Another question, how could I debug this? If I enable the option to "save a 
packet capture of the scan", I couldn't find any new log on logs dir (where 
should it be placed?)

Log attached (IP stripped; I could provide it in private for 
testing/debugging purposes):
[Mon Jun 23 20:56:43 2008][540] Use default port range
[Mon Jun 23 20:56:48 2008][540] user localuser : testing X.X.X.X (X.X.X.X) 
[540]
[Mon Jun 23 20:56:48 2008][540] Scan X.X.X.X using 21942 plugins
[Mon Jun 23 20:56:48 2008][540] user localuser : launching 
clrtxt_proto_settings.nasl against X.X.X.X [1]
[Mon Jun 23 20:56:48 2008][540] user localuser : launching 
dont_scan_settings.nasl against X.X.X.X [2]
[Mon Jun 23 20:56:48 2008][540] user localuser : launching 
ssh_settings.nasl against X.X.X.X [3]
[Mon Jun 23 20:56:48 2008][540] clrtxt_proto_settings.nasl (process 1) 
finished its job against X.X.X.X in 0.000 seconds
[Mon Jun 23 20:56:48 2008][540] dont_scan_settings.nasl (process 2) 
finished its job against X.X.X.X in 0.000 seconds
[Mon Jun 23 20:56:48 2008][540] ssh_settings.nasl (process 3) finished its 
job against X.X.X.X in 0.000 seconds
[Mon Jun 23 20:56:48 2008][540] user localuser : launching 
snmp_settings.nasl against X.X.X.X [4]
[Mon Jun 23 20:56:52 2008][540] snmp_settings.nasl (process 4) finished its 
job against X.X.X.X in 3.578 seconds
[Mon Jun 23 20:56:52 2008][540] user localuser : launching ping_host.nasl 
against X.X.X.X [5]
[Mon Jun 23 20:56:54 2008][540] ping_host.nasl (process 5) finished its job 
against W.W.W.W in 2.921 seconds
[Mon Jun 23 20:56:54 2008][540] user localuser : launching 
dont_scan_printers.nasl against X.X.X.X [6]
[Mon Jun 23 20:56:54 2008][540] The remote host (X.X.X.X) is dead
[Mon Jun 23 20:56:54 2008][540] Finished testing X.X.X.X. Time : 6.718 
secs, 6 plugins launched
[Mon Jun 23 20:56:54 2008][540] 1 hosts scanned

-- 

Saludos,
-Roman

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