Started encountering that issue again (after switching wifi networks several times opening the laptop from sleep)
Latest log from open to failure is below.
default 10:14:15.380261 -0400 Tunnelblick Tunnelblick: OS X 10.12.0; Tunnelblick 3.6.6beta02 (build 4581)
default 10:14:15.838948 -0400 Tunnelblick subsystem: com.apple.coreaudio, category: audiocomp, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:15.839619 -0400 Tunnelblick subsystem: com.apple.coreaudio, category: compload, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:15.866779 -0400 Tunnelblick subsystem: com.apple.coreaudio, category: AudioHAL_Client, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.018802 -0400 Tunnelblick subsystem: com.apple.libsqlite3, category: logging, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 2
default 10:14:16.043795 -0400 Tunnelblick Faulting in NSHTTPCookieStorage singleton
default 10:14:16.043816 -0400 Tunnelblick Faulting in CFHTTPCookieStorage singleton
default 10:14:16.043827 -0400 Tunnelblick Creating default cookie storage with process/bundle identifier
default 10:14:16.045486 -0400 Tunnelblick subsystem: com.apple.securityd, category: secpref, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.045884 -0400 Tunnelblick subsystem: com.apple.securityd, category: integrity, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.045967 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.046134 -0400 Tunnelblick subsystem: com.apple.securityd, category: handleobj, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.046233 -0400 Tunnelblick subsystem: com.apple.securityd, category: MDS_Scan, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.046388 -0400 Tunnelblick subsystem: com.apple.securityd, category: MDS_API, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.046506 -0400 Tunnelblick subsystem: com.apple.securityd, category: SSclnt, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.047406 -0400 securityd 0x7f9121155f00 client new: pid:50647 session:100008 /Applications/Tunnelblick.app taskPort:75835 uid:501 gid:20
default 10:14:16.047602 -0400 Tunnelblick subsystem: com.apple.securityd, category: MDS_IO, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.047702 -0400 Tunnelblick subsystem: com.apple.securityd, category: mdslock, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.047842 -0400 Tunnelblick subsystem: com.apple.securityd, category: security_exception, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.047873 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.047976 -0400 Tunnelblick subsystem: com.apple.securityd, category: DBOpen, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.048082 -0400 Tunnelblick subsystem: com.apple.securityd, category: dbsession, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.048111 -0400 Tunnelblick DbOpen of /private/var/db/mds/system/mdsDirectory.db
default 10:14:16.048273 -0400 Tunnelblick subsystem: com.apple.securityd, category: atomicfile, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.048305 -0400 Tunnelblick 0x61800007a280 opened /private/var/db/mds/system/mdsDirectory.db: 50744 bytes
default 10:14:16.048335 -0400 Tunnelblick 0x61800007a280 allocated /private/var/db/mds/system/mdsDirectory.db buffer 0x10b328000 size 50744
default 10:14:16.048360 -0400 Tunnelblick 0x61800007a280 closed /private/var/db/mds/system/mdsDirectory.db
default 10:14:16.049347 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.049456 -0400 Tunnelblick subsystem: com.apple.securityd, category: dynamic, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.049559 -0400 Tunnelblick subsystem: com.apple.securityd, category: callback, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.049661 -0400 Tunnelblick subsystem: com.apple.securityd, category: cssm, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.049748 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.049877 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.049958 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.050021 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.050113 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.050239 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.050353 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.050398 -0400 Tunnelblick DbOpen of /Users/MYUSER/Library/Keychains/login.keychain-db
default 10:14:16.050436 -0400 Tunnelblick 0x610000061100 opened /Users/MYUSER/Library/Keychains/login.keychain-db: 1118448 bytes
default 10:14:16.050472 -0400 Tunnelblick 0x610000061100 allocated /Users/MYUSER/Library/Keychains/login.keychain-db buffer 0x10b335000 size 1118448
default 10:14:16.050492 -0400 Tunnelblick 0x610000061100 closed /Users/MYUSER/Library/Keychains/login.keychain-db
default 10:14:16.051445 -0400 Tunnelblick loading /Users/MYUSER/Library/Keychains/login.keychain-db
default 10:14:16.052975 -0400 Tunnelblick subsystem: com.apple.securityd, category: kcreferral, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.053075 -0400 Tunnelblick not attempting migration for /Users/MYUSER/Library/Keychains/login.keychain-db version 512 (1 1 0)
default 10:14:16.053253 -0400 Tunnelblick DbOpen of /Library/Keychains/System.keychain
default 10:14:16.053304 -0400 Tunnelblick 0x6000002664c0 opened /Library/Keychains/System.keychain: 55016 bytes
default 10:14:16.053340 -0400 Tunnelblick 0x6000002664c0 allocated /Library/Keychains/System.keychain buffer 0x10b447000 size 55016
default 10:14:16.053387 -0400 Tunnelblick 0x6000002664c0 closed /Library/Keychains/System.keychain
default 10:14:16.054159 -0400 Tunnelblick loading /Library/Keychains/System.keychain
default 10:14:16.055726 -0400 Tunnelblick not attempting migration for /Library/Keychains/System.keychain version 256 (0 0 1)
default 10:14:16.055784 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.055813 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.055917 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.055938 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.056019 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.056055 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.056400 -0400 Tunnelblick subsystem: com.apple.network, category: , enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.056457 -0400 Tunnelblick TIC TCP Conn Start [1:0x600000180750]
default 10:14:16.097816 -0400 Tunnelblick TIC TCP Conn Event [1:0x600000180750]: 1 Err(0)
default 10:14:16.097834 -0400 Tunnelblick TIC TCP Conn Connected [1:0x600000180750]: Err(0)
default 10:14:16.097949 -0400 Tunnelblick TIC Enabling TLS [1:0x600000180750]
default 10:14:16.143256 -0400 Tunnelblick TIC TLS Event [1:0x600000180750]: 2, Pending(0)
default 10:14:16.143406 -0400 Tunnelblick TIC TLS Event [1:0x600000180750]: 11, Pending(0)
default 10:14:16.143631 -0400 Tunnelblick subsystem: com.apple.securityd, category: dateparse, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.143991 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.144279 -0400 Tunnelblick UNIX error exception: 17
default 10:14:16.144584 -0400 Tunnelblick subsystem: com.apple.securityd, category: SecImpExp, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2
default 10:14:16.145463 -0400 Tunnelblick TIC TLS Event [1:0x600000180750]: 12, Pending(0)
default 10:14:16.145504 -0400 Tunnelblick TIC TLS Event [1:0x600000180750]: 14, Pending(0)
default 10:14:16.146264 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.146324 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.159766 -0400 Tunnelblick TIC TLS Trust Result [1:0x600000180750]: 0
default 10:14:16.180871 -0400 Tunnelblick TIC TLS Event [1:0x600000180750]: 20, Pending(0)
default 10:14:16.181202 -0400 Tunnelblick TIC TCP Conn Event [1:0x600000180750]: 8 Err(0)
default 10:14:16.181223 -0400 Tunnelblick TIC TLS Handshake Complete [1:0x600000180750]
default 10:14:16.181453 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.181480 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.181630 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.181686 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.181849 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.181900 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:16.182049 -0400 Tunnelblick switching to keychain-db: /Users/MYUSER/Library/Keychains/login.keychain-db from /Users/MYUSER/Library/Keychains/login.keychain (0 1 1 1)
default 10:14:16.182072 -0400 Tunnelblick not switching as we're not in ~/Library/Keychains/: /Library/Keychains/System.keychain (0)
default 10:14:17.026328 -0400 Tunnelblick Received fatal signal Segmentation fault (11); stack trace: (
0 Tunnelblick 0x000000010007582c callStack + 56
1 Tunnelblick 0x000000010001a82a signal_handler + 176
2 libsystem_platform.dylib 0x00007fffc372fd7a _sigtramp + 26
3 libobjc.A.dylib 0x00007fffcc0a42d0 runtimeLock + 0
4 Tunnelblick 0x0000000100009cf6 -[VPNConnection processState:dated:] + 561
5 Tunnelblick 0x0000000100009a72 -[VPNConnection setStateFromLine:] + 353
6 Foundation 0x00007fffafe5bdda __NSThreadPerformPerform + 326
7 CoreFoundation 0x00007fffae400491 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
8 CoreFoundation 0x00007fffae3e163d __CFRunLoopDoSources0 + 557
9 CoreFoundation 0x00007fffae3e0b36 __CFRunLoopRun + 934
10 CoreFoundation 0x00007fffae3e0534 CFRunL
default 10:14:21.678993 -0400 Tunnelblick 0x610000061100 free /Users/MYUSER/Library/Keychains/login.keychain-db buffer 0x10b335000
default 10:14:21.679494 -0400 Tunnelblick 0x6000002664c0 free /Library/Keychains/System.keychain buffer 0x10b447000