btsync stopped working and doesn't start again

[sirio81]

I have btsync 2.3.3.
Since yesterday morning it stopped syncing.
There has been also an issue with the virtual machine it's running on (debian 7.7. 64bit), but after reboot it should have start working again.

I notice that if I run btsync by

/opt/btsync/btsync --webui.listen 0.0.0.0:9003

no precess is running.
Debug is enabled, so I got and check the log.
The last rows are these:

[15:19:22.273] Debug log mask has been set to FFFFFFFF
[15:19:22.273] Features mask has been set to 0
[20160512 15:19:22.276] Configuration from file "" has been applied
[20160512 15:19:22.318] ZIP: Can't locate [version] in zip, error -100.
[20160512 15:19:22.321] PLC[0x0000000001ce8d80] binding on 0.0.0.0:9003
[20160512 15:19:22.321] Socket[0x0000000001ce8d80][7] bound listening socket 7 to IP 0.0.0.0:9003
[20160512 15:19:22.321] UDP: bound listening socket 8 to IP 0.0.0.0:9003
[20160512 15:19:22.322] Unable to listen for HTTP traffic on port 9003.  Exiting...
[20160512 15:19:22.323] test sha1: AE5BD8EFEA5322C4D9986D06680A781392F9A642
[20160512 15:19:22.323] test sha2: 630DCD2966C4336691125448BBB25B4FF412A49C732DB2C8ABC1B8581BD710DD
[20160512 15:19:22.323] test aes: 0A940BB5416EF045F1C39458C653EA5A07FEEF74E1D5036E900EEE118E949293
[20160512 15:19:22.325] saved history: 0 events
[20160512 15:19:22.325] Shutdown. Saving config sync.dat
[20160512 15:19:22.325] Loading config file version 2.3.3, current version 2.3.3
[20160512 15:19:22.325] My PeerID: 10C8EBD7DF9F92FA1673347069ECCC6B3C54A308
[20160512 15:19:22.325] LC: LoadLicenses: there is no pro license
[20160512 15:19:22.326] loaded history: 0 events

It's shouldn't be matter of licenses since this installation in sharing only 2-3 folder and doesn't require any of the pro features.
May you help me understanding what's wrong?

Thank you.

[sirio81]

I have some more info about this case:
I tried to run btysnc with --nodaemon option and there I was able to see it wasn't able to use the specified port 9003.
I have no idea of the reason because the port isn't in use.
I tried then to run it on the default port 8888 and the process doesn't die :-)
 

/opt/btsync/btsync --nodaemon --webui.listen 0.0.0.0:9003
**** ERROR ****
**** Unable to listen for HTTP traffic on port 9003.  Exiting...

netstat -l --tcp --numeric | grep 9003

/opt/btsync/btsync --nodaemon --webui.listen 0.0.0.0:8888

Unfortunately, when I access the web page, it asks me to create an identity, like it was the fist time I run the application.
Here is the log when I tried to run btsync with --nodaemon on port 9003 and port 8888.

[16:23:21.484] Debug log mask has been set to FFFFFFFF
[16:23:21.484] Features mask has been set to 0
[20160512 16:23:21.486] Configuration from file "" has been applied
[20160512 16:23:21.494] ZIP: Can't locate [version] in zip, error -100.
[20160512 16:23:21.496] PLC[0x0000000002eb1d80] binding on 0.0.0.0:9003
[20160512 16:23:21.496] Socket[0x0000000002eb1d80][7] bound listening socket 7 to IP 0.0.0.0:9003
[20160512 16:23:21.496] UDP: bound listening socket 8 to IP 0.0.0.0:9003
[20160512 16:23:21.496] Socket[0x0000000002eb4440][10] bound listening socket 10 to IP 0.0.0.0:8888
[20160512 16:23:21.498] test sha1: AE5BD8EFEA5322C4D9986D06680A781392F9A642
[20160512 16:23:21.498] test sha2: 630DCD2966C4336691125448BBB25B4FF412A49C732DB2C8ABC1B8581BD710DD
[20160512 16:23:21.498] test aes: 0A940BB5416EF045F1C39458C653EA5A07FEEF74E1D5036E900EEE118E949293
[20160512 16:23:21.498] Loading config file version 2.3.3, current version 2.3.3
[20160512 16:23:21.498] My PeerID: 10C8EBD7DF9F92FA1673347069ECCC6B3C54A308
[20160512 16:23:21.499] LC: LoadLicenses: there is no pro license
[20160512 16:23:21.499] loaded history: 0 events
[20160512 16:23:21.499] setup socket 12 for local peer discovery for 127.0.0.1: success
[20160512 16:23:21.499] setup socket 13 for local peer discovery for 192.168.6.205: success
[20160512 16:23:26.002] Debug log mask has been set to FFFFFFFF
[20160512 16:23:26.002] Features mask has been set to 0
[20160512 16:24:38.855] ZIP: Can't locate [css/style.css] in zip, error -100.
[20160512 16:24:39.810] ****** WebUI Added as listener: 0x0000000002eb8a20 (count=1)
[20160512 16:27:54.112] ****** WebUI Added as listener: 0x0000000002eb8a20 (count=1)

 

[Helen]

Your machine doesn't support ipv6, does it? 

if that's the case, please update to Sync v 2.3.7 where this issue is addressed.