Same problem for 0.96.3.991 (updated to see if it was fixed) but removing that line helped me too.
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2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1147 - C++ block utilities loaded successfully
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:672 - Executing popen: free -m
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:672 - Executing popen: ['cat', '/proc/cpuinfo']
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1264 -
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1265 -
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1266 -
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1267 - ************************************************************
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1268 - Invoked: /usr/bin/../lib/armory/ArmoryQt.py
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1269 - ************************************************************
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1270 - Loading Armory Engine:
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1271 - Armory Version : 0.96.2
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1272 - Armory Build: : None
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1273 - PyBtcWallet Version : 1.35
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1274 - Detected Operating system: Linux
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1275 - OS Variant : --
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1276 - User home-directory : /home/uncle
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1277 - Satoshi BTC directory : /home/uncle/.bitcoin
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1278 - Armory home dir : /home/uncle/.armory/
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1279 - Detected System Specs :
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1280 - Total Available RAM : 31.36 GB
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1281 - CPU ID string : Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1282 - Number of CPU cores : 8 cores
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1283 - System is 64-bit : True
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1284 - Preferred Encoding : UTF-8
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1285 - Machine Arch : x86_64
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1286 - Available HDD (ARM) : 216 GB
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1287 - Available HDD (BTC) : 216 GB
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1288 -
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1289 - Network Name: Main Network
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1290 - Satoshi Port: 8333
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1291 - Do wlt check: True
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1292 - Named options/arguments to armoryengine.py:
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - thread_count : -1
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - rescan : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - ignoreAllZC : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - rescanBalance : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - disableModules : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - port : None
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - interport : 8223
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - coverageOutputDir: None
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - forceWalletCheck: False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - regtest : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - rebuild : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - nettimeout : 2
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - datadir : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - clearMempool : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - offline : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - armoryDBDir : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - armorydb_port : 9001
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - satoshiPort : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - useTorSettings : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - netlog : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - keypool : 100
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - coverageInclude : None
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - forceOnline : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - redownload : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - rpcBindAddr : 127.0.0.1
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - armorydb_ip : 127.0.0.1
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - multisigFile : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - ram_usage : -1
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - mtdebug : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - logDisable : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - settingsPath : /home/uncle/.armory/ArmorySettings.txt
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - language : en
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - db_type : DB_FULL
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - doDebug : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - enableDetSign : True
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - disableConfPermis: False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - testnet : False
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - rpcport : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - satoshiHome : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - satoshiRpcport : DEFAULT
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - logFile : /home/uncle/.armory/ArmoryQt.py.log.txt
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1294 - verbosity : None
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1295 - Other arguments:
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1298 - ************************************************************
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:1701 - C++ block utilities loaded successfully
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:3562 - Using settings file: /home/uncle/.armory/ArmorySettings.txt
2017-08-27 11:16:25 (ERROR) -- ArmoryUtils.py:3719 - Unsupported language specified. Defaulting to English (en)
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:3722 - Using Language: en
2017-08-27 11:16:25 (INFO) -- BDM.py:355 - Using the asynchronous/multi-threaded BlockDataManager.
2017-08-27 11:16:25 (INFO) -- BDM.py:356 - Blockchain operations will happen in the background.
2017-08-27 11:16:25 (INFO) -- BDM.py:357 - Devs: check TheBDM.getState() before asking for data.
2017-08-27 11:16:25 (INFO) -- BDM.py:358 - Registering addresses during rescans will queue them for
2017-08-27 11:16:25 (INFO) -- BDM.py:359 - inclusion after the current scan is completed.
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:3562 - Using settings file: /home/uncle/.armory/ArmorySettings.txt
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:2061 - loadWalletsAndSettings
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:2121 - Loading wallets...
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:2186 - Number of wallets read in: 1
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:2191 - Wallet (XXXXXXXXX): "Primary Wallet (Watch) " (No Encryption)
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:2196 - Loading Multisig Lockboxes
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1763 - acquiring process mutex...
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1395 - setupUriRegistration
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:672 - Executing popen: gconftool-2 --get /desktop/gnome/url-handlers/bitcoin/command
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:672 - Executing popen: xdg-mime query default x-scheme-handler/bitcoin
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:566 - Usermode: Expert
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1698 - Changing usermode:
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1699 - From: Expert
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1707 - To: Expert
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1836 - startBitcoindIfNecessary
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1872 - setSatoshiPaths
2017-08-27 11:16:25 (WARNING) -- SDM.py:396 - Spawning DB with command: ArmoryDB --db-type="DB_FULL" --cookie --satoshi-datadir="/home/uncle/.bitcoin/blocks" --datadir="/home/uncle/.armory/" --dbdir="/home/uncle/.armory/databases"
2017-08-27 11:16:25 (INFO) -- ArmoryUtils.py:672 - Executing popen: ['ArmoryDB', '--db-type="DB_FULL"', '--cookie', '--satoshi-datadir="/home/uncle/.bitcoin/blocks"', '--datadir="/home/uncle/.armory/"', '--dbdir="/home/uncle/.armory/databases"']
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1824 - Connecting on port 52768
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1924 - Setting netmode: 1
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1906 - loadBlockchainIfNecessary
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:1924 - Setting netmode: 1
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:25 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:26 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:26 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:26 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:26 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:26 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:27 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:27 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:27 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:27 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:29 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:29 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:29 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:29 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:29 (INFO) -- ArmoryQt.py:4670 - Dashboard switched to "Scanning" mode
2017-08-27 11:16:57 (INFO) -- ArmoryQt.py:4944 - New Block! : 482242
2017-08-27 11:16:57 (INFO) -- ArmoryQt.py:4952 - Current block number: 482242
2017-08-27 11:19:52 (INFO) -- TxFrames.py:1658 - Saving unsigned tx file: /run/media/uncle/SANDISK/armory_XXXXXXXX_.unsigned.tx
2017-08-27 11:20:21 (INFO) -- ArmoryQt.py:4944 - New Block! : 482243
2017-08-27 11:20:21 (INFO) -- ArmoryQt.py:4952 - Current block number: 482243
2017-08-27 11:23:06 (INFO) -- ArmoryQt.py:4944 - New Block! : 482244
2017-08-27 11:23:06 (INFO) -- ArmoryQt.py:4952 - Current block number: 482244