Hi, Sync has been working great for me until I hit a problem today and I need some help troubleshooting. Problem: Client A doesn't sync with Client B or C. Scenario: Client A - Digitalocean droplet running 1.1.70 BTSync linux client Client B - Laptop running 1.1.48 BTSync linux client Client C - Laptop running 1.1.48 BTSync windows client The laptops are on different ISPs. Clients B and C sync successfully. My sync.conf on Client A: http://pastebin.com/W6vbfEEf Clients B and C have no sync.conf, the settings in the web ui are pretty much the defaults, I enabled DHT on B. I checked and made sure the secret key matches on all 3 systems. Have tried running btsync on Client A as both root and my normal user, no difference. Output of sync.log from Client A (first few lines of test hashes omitted): [20130908 03:18:39.138] Loading config file version 1.1.70 [20130908 03:18:40.173] Got 2 relay ips [20130908 03:18:40.173] ip 126.96.36.199:3000 [20130908 03:18:40.173] ip 188.8.131.52:3000 [20130908 03:18:51.159] NAT-PMP: Unable to map port with NAT-PMP. [20130908 03:19:40.477] Got 2 relay ips [20130908 03:19:40.478] ip 184.108.40.206:3000 [20130908 03:19:40.478] ip 220.127.116.11:3000 [20130908 03:20:40.495] Got 2 relay ips [20130908 03:20:40.495] ip 18.104.22.168:3000 [20130908 03:20:40.495] ip 22.214.171.124:3000 Can anyone point me in the right direction? Thanks!