My main problem is the my client crashes about  two minutes after starting to update, so I cannot access the debug window to extract my PKs. This is error log from my last session.  Any help would be appreciated.

2018-01-16 14:37:13 Bitcoin version v0.14.2
2018-01-16 14:37:13 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
2018-01-16 14:37:14 Assuming ancestors of block 00000000000000000013176bf8d7dfeab4e1db31dc93bc311b436e82ab226b90 have valid signatures.
2018-01-16 14:37:14 GUI: "registerShutdownBlockReason: Successfully registered: Bitcoin Core didn't yet exit safely..."
2018-01-16 14:37:14 Default data directory C:\Users\User\AppData\Roaming\Bitcoin
2018-01-16 14:37:14 Using data directory C:\Users\User\AppData\Roaming\Bitcoin
2018-01-16 14:37:14 Using config file C:\Users\User\AppData\Roaming\Bitcoin\bitcoin.conf
2018-01-16 14:37:14 Using at most 125 automatic connections (2048 file descriptors available)
2018-01-16 14:37:15 Using 32 MiB out of 32 requested for signature cache, able to store 1048576 elements
2018-01-16 14:37:15 Using 2 threads for script verification
2018-01-16 14:37:15 Using BerkeleyDB version Berkeley DB 4.8.30: (April  9, 2010)
2018-01-16 14:37:15 Using wallet wallet.dat
2018-01-16 14:37:15 scheduler thread start
2018-01-16 14:37:15 init message: Verifying wallet...
2018-01-16 14:37:15 CDBEnv::Open: LogDir=C:\Users\User\AppData\Roaming\Bitcoin\database ErrorFile=C:\Users\User\AppData\Roaming\Bitcoin\db.log
2018-01-16 14:37:15 Bound to [::]:8333
2018-01-16 14:37:15 Bound to 0.0.0.0:8333
2018-01-16 14:37:15 Cache configuration:
2018-01-16 14:37:15 * Using 2.0MiB for block index database
2018-01-16 14:37:15 * Using 8.0MiB for chain state database
2018-01-16 14:37:15 * Using 440.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
2018-01-16 14:37:15 init message: Loading block index...
2018-01-16 14:37:15 Opening LevelDB in C:\Users\User\AppData\Roaming\Bitcoin\blocks\index
2018-01-16 14:37:15 Opened LevelDB successfully
2018-01-16 14:37:15 Using obfuscation key for C:\Users\User\AppData\Roaming\Bitcoin\blocks\index: 0000000000000000
2018-01-16 14:37:15 Opening LevelDB in C:\Users\User\AppData\Roaming\Bitcoin\chainstate
2018-01-16 14:37:20 Opened LevelDB successfully
2018-01-16 14:37:20 Using obfuscation key for C:\Users\User\AppData\Roaming\Bitcoin\chainstate: 605c27b0b68dd2e3
2018-01-16 14:37:38 LoadBlockIndexDB: last block file = 1122
2018-01-16 14:37:38 LoadBlockIndexDB: last block file info: CBlockFileInfo(blocks=88, size=91936832, heights=501577...502080, time=2017-12-29...2018-01-01)
2018-01-16 14:37:38 Checking all blk files are present...
2018-01-16 14:37:46 LoadBlockIndexDB: transaction index disabled
2018-01-16 14:37:47 LoadBlockIndexDB: hashBestChain=0000000000000000000e9263083af3922a0ea0d7d696e4a0272742cabc433854 height=502069 date=2018-01-01 16:18:52 progress=0.985870
2018-01-16 14:37:47 init message: Rewinding blocks...
2018-01-16 14:37:52 init message: Verifying blocks...
2018-01-16 14:37:52 Verifying last 6 blocks at level 3
2018-01-16 14:37:52 [0%]...[16%]...[33%]...[50%]...[66%]...[83%]...[99%]...[DONE].
2018-01-16 14:38:25 No coin database inconsistencies in last 7 blocks (13633 transactions)
2018-01-16 14:38:25  block index           70509ms
2018-01-16 14:38:25 init message: Loading wallet...
2018-01-16 14:38:25 nFileVersion = 140200
2018-01-16 14:38:25 Keys: 0 plaintext, 206 encrypted, 206 w/ metadata, 206 total
2018-01-16 14:38:25  wallet                  143ms
2018-01-16 14:38:25 setKeyPool.size() = 100
2018-01-16 14:38:25 mapWallet.size() = 3
2018-01-16 14:38:25 mapAddressBook.size() = 4
2018-01-16 14:38:25 mapBlockIndex.size() = 502103
2018-01-16 14:38:25 nBestHeight = 502069
2018-01-16 14:38:25 torcontrol thread start
2018-01-16 14:38:25 init message: Loading addresses...
2018-01-16 14:38:27 Loaded 68639 addresses from peers.dat  1313ms
2018-01-16 14:38:27 init message: Loading banlist...
2018-01-16 14:38:27 init message: Starting network threads...
2018-01-16 14:38:27 net thread start
2018-01-16 14:38:27 addcon thread start
2018-01-16 14:38:27 dnsseed thread start
2018-01-16 14:38:27 opencon thread start
2018-01-16 14:38:27 msghand thread start
2018-01-16 14:38:27 init message: Done loading
2018-01-16 14:38:38 Loading addresses from DNS seeds (could take a while)
2018-01-16 14:38:39 95 addresses found from DNS seeds
2018-01-16 14:38:39 dnsseed thread exit
2018-01-16 14:39:02 UpdateTip: new best=00000000000000000077c418d985debd6cfda2964cab4d6eabd76fa12b4bdb80 height=502070 version=0x20000000 log2_work=87.777673 tx=288003660 date='2018-01-01 16:43:08' progress=0.985885 cache=10.4MiB(6586tx)
2018-01-16 14:39:02 GUI: Platform customization: "windows"
2018-01-16 14:39:02 GUI: PaymentServer::LoadRootCAs: Loaded  53  root certificates
2018-01-16 14:39:57 UpdateTip: new best=000000000000000000522293862aba17a70ef1d7cab0f2c65fc27d5885438d7c height=502071 version=0x20000000 log2_work=87.777718 tx=288005550 date='2018-01-01 16:49:12' progress=0.985888 cache=36.8MiB(11798tx)
2018-01-16 14:39:57 receive version message: /btcwire:0.5.0/btcd:0.12.0/: version 70013, blocks=504486, us=82.11.163.160:51969, peer=0
2018-01-16 14:41:02 UpdateTip: new best=0000000000000000008df054f5a7442e58ea2765bebc51fa95bca4374dc1f901 height=502072 version=0x20000000 log2_work=87.777763 tx=288007288 date='2018-01-01 16:51:35' progress=0.985889 cache=48.7MiB(18277tx)
2018-01-16 14:41:03 version handshake timeout from 1
2018-01-16 14:41:03 ProcessMessages(version, 111 bytes) FAILED peer=1
2018-01-16 14:41:45 UpdateTip: new best=000000000000000000318b5e89946a00ab6e6ab333a4c1e07f2b23f6521524fc height=502073 version=0x20000000 log2_work=87.777808 tx=288009159 date='2018-01-01 16:58:08' progress=0.985893 cache=57.1MiB(23498tx)
2018-01-16 14:42:31 UpdateTip: new best=0000000000000000000fa62c4a2b7da2597cd00526cdc0d7c640b0c66d735dba height=502074 version=0x20000000 log2_work=87.777853 tx=288010388 date='2018-01-01 17:03:37' progress=0.985896 cache=64.1MiB(27889tx)
2018-01-16 14:42:31 version handshake timeout from 3
2018-01-16 14:42:31 receive version message: /Satoshi:0.15.1/: version 70015, blocks=504487, us=67.205.184.143:8333, peer=3
2018-01-16 14:43:19 UpdateTip: new best=000000000000000000191d7d81ac5127de2e15f569342ba2fad46f93ffa08f66 height=502075 version=0x20000000 log2_work=87.777898 tx=288011530 date='2018-01-01 17:08:58' progress=0.985899 cache=74.1MiB(31839tx)
2018-01-16 14:43:19 version handshake timeout from 4
2018-01-16 14:43:19 receive version message: /Satoshi:0.15.0.1/: version 70015, blocks=504485, us=52.36.232.32:8333, peer=4
2018-01-16 14:43:38 UpdateTip: new best=00000000000000000061499660768fbc7904efe801e475cc66db5e0d0c76c29c height=502076 version=0x20000000 log2_work=87.777943 tx=288014549 date='2018-01-01 17:41:06' progress=0.985920 cache=76.2MiB(36122tx)
2018-01-16 14:44:21 version handshake timeout from 6
2018-01-16 14:44:28 UpdateTip: new best=0000000000000000002ad58e1ef962c18a472c5b5d87cd68d2910848b198fbc0 height=502077 version=0x20000000 log2_work=87.777988 tx=288016643 date='2018-01-01 17:46:16' progress=0.985923 cache=81.6MiB(40988tx)
2018-01-16 14:44:28 receive version message: /Satoshi:0.15.1/: version 70015, blocks=504488, us=82.11.163.160:52045, peer=6
2018-01-16 14:45:06 UpdateTip: new best=00000000000000000046cee33a12949ac8f00f93fc1ec78ec33ab0c50bc29a06 height=502078 version=0x20000000 log2_work=87.778034 tx=288018961 date='2018-01-01 18:23:56' progress=0.985947 cache=83.4MiB(45138tx)
2018-01-16 14:45:06 version handshake timeout from 7
2018-01-16 14:45:06 receive version message: /Satoshi:0.15.1/: version 70015, blocks=504485, us=138.68.68.138:8333, peer=7
2018-01-16 14:45:38 UpdateTip: new best=00000000000000000070a9b4b9bc7def1870964ec351b9ba9b48cf4e66906576 height=502079 version=0x20000000 log2_work=87.778079 tx=288021451 date='2018-01-01 18:31:51' progress=0.985952 cache=84.5MiB(49371tx)
2018-01-16 14:45:38 receive version message: /Satoshi:0.15.1/: version 70015, blocks=504488, us=82.11.163.160:52059, peer=8
2018-01-16 14:45:38 ERROR: ReadBlockFromDisk: Errors in block header at CBlockDiskPos(nFile=1122, nPos=90868107)
2018-01-16 14:45:38 *** Failed to read block
2018-01-16 14:46:08 version handshake timeout from 9
2018-01-16 14:46:19 Failed to connect best blocktor: Thread interrupt
2018-01-16 14:46:19 addcon thread exit
2018-01-16 14:46:19 opencon thread exit
2018-01-16 14:46:19 net thread exit
2018-01-16 14:46:19 scheduler thread interrupt
2018-01-16 14:46:19 torcontrol thread exit
2018-01-16 14:46:19 msghand thread exit
2018-01-16 14:46:19 Shutdown: In progress...
2018-01-16 14:46:22 Shutdown: done