wow, its strange, windows wallet i downloaded from dropbox, but linux took from git. Interesting that both are the same problem... Can you please paste here your nutcoin.conf file? maybe there has some mistake. Rly runing out of ideas...))
Nutcoin.conf
rpcuser=username
rpcpassword=password
rpcallowip=127.0.0.1
rpcport=9507
port=9508
listen=1
daemon=1
server=1
addnode=79.177.30.82
addnode=92.44.166.162
addnode=192.117.157.194
addnode=89.230.65.93
addnode=52.8.65.121
addnode=109.65.133.236
addnode=91.140.96.25
addnode=218.186.26.120
addnode=192.117.157.194
addnode=192.99.4.55
addnode=217.190.168.140
addnode=139.162.22.146:9508
addnode=178.62.70.211:34115
addnode=52.8.65.121:53478
addnode=86.183.67.43:28297
addnode=111.161.32.83:2612
addnode=109.66.115.163:9508
addnode=98.115.147.74:9508
addnode=178.62.70.211:9508
addnode=139.162.22.146:9508
addnode=178.62.70.211:34115
addnode=52.8.65.121:53478
addnode=86.183.67.43:28297
addnode=111.161.32.83:2612
addnode=109.66.115.163:9508
addnode=98.115.147.74:9508
addnode=107.150.38.154:9508
addnode=85.236.188.213:57622
addnode=50.197.11.193:57288
addnode=23.21.204.34:53076
addnode=192.99.4.55:36057
addnode=78.228.73.146:9508
addnode=109.201.152.230:59692
addnode=98.245.250.167:48506
addnode=89.212.242.33:9508
addnode=78.228.73.146:50420
addnode=5.141.185.190:55054
addnode=129.24.128.122:58085
addnode=173.64.68.108:59954
addnode=162.243.84.188:9508
addnode=31.31.51.7:47704
addnode=88.11.239.173:39264
addnode=23.227.177.227:9508