It happened again right now
here's a screenshot with log




dbLog.txt

Log file opened at 1506776459: C:\Users\xxxxxxxx\AppData\Roaming\Armory\dbLog.txt
-INFO  - 1506776459: (..\main.cpp:23) Running on 8 threads
-INFO  - 1506776459: (..\main.cpp:24) Ram usage level: 4
-INFO  - 1506776459: (..\BlockUtils.cpp:907) blkfile dir: C:\Users\xxxxxxxx\AppData\Roaming\Bitcoin\blocks
-INFO  - 1506776459: (..\BlockUtils.cpp:908) lmdb dir: C:\Users\xxxxxxxx\AppData\Roaming\Armory\databases
-INFO  - 1506776459: (..\lmdb_wrapper.cpp:388) Opening databases...
-INFO  - 1506776460: (..\BitcoinP2P.cpp:947) Connected to Bitcoin node
-INFO  - 1506776461: (..\BDM_Server.cpp:996) registered bdv: 55fcb76e9fa7b8e8e864
-INFO  - 1506776462: (..\BlockUtils.cpp:1091) Executing: doInitialSyncOnLoad
-INFO  - 1506776462: (..\DatabaseBuilder.cpp:169) Reading headers from db
-INFO  - 1506776464: (..\DatabaseBuilder.cpp:208) Found 487419 headers in db
-INFO  - 1506776466: (..\DatabaseBuilder.cpp:51) updating HEADERS db
-INFO  - 1506776469: (..\DatabaseBuilder.cpp:268) parsed block file #969
-INFO  - 1506776470: (..\DatabaseBuilder.cpp:268) parsed block file #970
-INFO  - 1506776471: (..\DatabaseBuilder.cpp:268) parsed block file #971
-DEBUG - 1506776471: (..\Blockchain.cpp:242) Organizing chain
-INFO  - 1506776471: (..\DatabaseBuilder.cpp:56) updated HEADERS db in 5.273s
-INFO  - 1506776472: (..\DatabaseBuilder.cpp:106) scanning new blocks from #487313 to #487683
-INFO  - 1506776472: (..\BlockchainScanner.cpp:650) scanned from height #487313 to #487683
-INFO  - 1506776472: (..\BlockchainScanner.cpp:225) scanned transaction history in 0.351s
-INFO  - 1506776472: (..\DatabaseBuilder.cpp:156) scanned new blocks in 0.367s
-INFO  - 1506776472: (..\DatabaseBuilder.cpp:160) init db in 10.265s
-INFO  - 1506776472: (..\BlockUtils.cpp:1206) Enabling zero-conf tracking
-WARN  - 1506776475: (..\BDM_supportClasses.cpp:1891) running 10 zc parser threads
-WARN  - 1506776475: (..\BDM_supportClasses.cpp:1891) running 15 zc parser threads
-WARN  - 1506776475: (..\BDM_supportClasses.cpp:1891) running 20 zc parser threads
-WARN  - 1506776475: (..\BDM_supportClasses.cpp:1891) running 25 zc parser threads
-WARN  - 1506776475: (..\BDM_supportClasses.cpp:1891) running 30 zc parser threads
-WARN  - 1506776543: (..\BDM_supportClasses.cpp:1891) running 35 zc parser threads
-INFO  - 1506776592: (..\BDM_Server.cpp:1025) unregistered bdv: 55fcb76e9fa7b8e8e864

armorylog.txt here https://pastebin.com/KJpWqMa9

Thanks