Message: Ensure condition failed: this->isBound()

Hi!

There is a message coming up on my packaged game.
I don’t know exactly when it happens, but it is pretty rare. I believe it has something to do with the AI path.
This message came way more often when the enemies would chase the player through destructed mesh.
I haven’t been able to recreate this message playing in the editor (or standalone game) - only on the packaged game.

The strange thing is that it doesn’t actually close the game, the message just appear on a black background. After I hit ‘OK’ I go the desktop automatically, from where I can just click the opened game icon on the Windows’ toolbar.

Here is a print of the message that appears:

Here is a print of the AI character’s event graph (I am using Blueprint for the whole project, I don’t really know C++) (note the ‘Chase Player’ Event):

This the part of the game log where the message shows (let me know if you want to see the whole log):

[2014.07.27-01.06.16:172][946]LogWorld: Game class is ‘GmBP_AlienPlayer_C’
[2014.07.27-01.06.16:172][946]LogAIModule: Creating AISystem for world Level_01
[2014.07.27-01.06.16:207][946]LogWorld: Bringing World /Game/Maps/Level_01.Level_01 up for play (max tick rate 0) at 2014.07.26-22.06.16
[2014.07.27-01.06.16:218][946]LogWorld: Bringing up level for play took: 0.045754
[2014.07.27-01.06.16:218][946]LogPlayerController: Spawned spectator SpectatorPawn_5 [server:1]
[2014.07.27-01.06.16:219][946]LogGameMode: RestartPlayer 261
[2014.07.27-01.06.16:219][946]LogPlayerController: ClientRestart_Implementation CharBP_Alien_C_0
[2014.07.27-01.06.16:219][946]LogPlayerController: ServerAcknowledgePossession_Implementation CharBP_Alien_C_0
[2014.07.27-01.06.16:282][946]LogRenderer:Warning: Reallocating scene render targets to support 128x128.
[2014.07.27-01.06.16:396][948]LogRenderer:Warning: Reallocating scene render targets to support 1920x1080.
[2014.07.27-01.07.16:015][524]LogOutputDevice: === Handled error: ===
Ensure condition failed: this->IsBound() [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\core\public\delegates\DelegateSignatureImpl.inl] [Line: 2035]
Unable to bind delegate to ‘&UAIAsyncTaskBlueprintProxy::OnMoveCompleted’ (function might not be marked as a UFUNCTION)
Stack: Address = 0x3f525ca6 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b84f2 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b87a7 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff84516 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff93559 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7a9e89 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7643ed (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40c9b28c (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40caa456 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x407add41 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3bee81 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b58bc (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b590a (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3c0107 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x4160ae15 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x77a759ed (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
[2014.07.27-01.07.16:060][524]LogWindows:Warning: Couldn’t start up the Auto Reporting process!
[2014.07.27-01.07.16:060][524]LogMemory: Platform Memory Stats for WindowsNoEditor
[2014.07.27-01.07.16:060][524]LogMemory: Process Physical Memory: 456.41 MB used, 539.36 MB peak
[2014.07.27-01.07.16:060][524]LogMemory: Process Virtual Memory: 372.32 MB used, 504.61 MB peak
[2014.07.27-01.07.16:060][524]LogMemory: Physical Memory: 3716.91 MB used, 16339.17 MB total
[2014.07.27-01.07.16:060][524]LogMemory: Virtual Memory: 748.39 MB used, 8388608.00 MB total
[2014.07.27-01.07.40:938][524]LogOutputDevice: === Handled error: ===
Ensure condition failed: this->IsBound() [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\core\public\delegates\DelegateSignatureImpl.inl] [Line: 2035]
Unable to bind delegate to ‘&UAIAsyncTaskBlueprintProxy::OnMoveCompleted’ (function might not be marked as a UFUNCTION)
Stack: Address = 0x3f525ca6 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b84f2 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b87a7 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff84516 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff93559 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7a9e89 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7643ed (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40c9b28c (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40caa456 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x407add41 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3bee81 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b58bc (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b590a (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3c0107 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x4160ae15 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x77a759ed (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
[2014.07.27-01.07.40:948][524]LogOutputDevice: === Handled error: ===
Ensure condition failed: this->IsBound() [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\core\public\delegates\DelegateSignatureImpl.inl] [Line: 2035]
Unable to bind delegate to ‘&UAIAsyncTaskBlueprintProxy::OnMoveCompleted’ (function might not be marked as a UFUNCTION)
Stack: Address = 0x3f525ca6 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b84f2 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b87a7 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff84516 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff93559 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7a9e89 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7643ed (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40c9b28c (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40caa456 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x407add41 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3bee81 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b58bc (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b590a (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3c0107 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x4160ae15 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x77a759ed (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
[2014.07.27-01.07.40:957][524]LogOutputDevice: === Handled error: ===
Ensure condition failed: this->IsBound() [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\core\public\delegates\DelegateSignatureImpl.inl] [Line: 2035]
Unable to bind delegate to ‘&UAIAsyncTaskBlueprintProxy::OnMoveCompleted’ (function might not be marked as a UFUNCTION)
Stack: Address = 0x3f525ca6 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b84f2 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f5b87a7 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff84516 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3ff93559 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7a9e89 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f7643ed (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40c9b28c (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x40caa456 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x407add41 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3bee81 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b58bc (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3b590a (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x3f3c0107 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x4160ae15 (filename not found) [in F:_HD_Daniel_Games_Alien Bounty Hunter\Production\Builds\Development\v07\WindowsNoEditor\AlienBountyHunter\Binaries\Win64\AlienBountyHunter.exe]
Address = 0x77a759ed (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x77cac541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
[2014.07.27-01.08.02:247][546]LogPackageName: SearchForPackageOnDisk took 0.028s to resolve Main_Menu.umap
[2014.07.27-01.08.02:272][546]LogPackageName: SearchForPackageOnDisk took 0.025s to resolve Main_Menu.umap
[2014.07.27-01.08.02:272][546]LogNet: Browse: /Game/Maps/Main_Menu
[2014.07.27-01.08.02:273][546]LogLoad: LoadMap: /Game/Maps/Main_Menu
[2014.07.27-01.08.02:380][546]LogParticles: Destroying 0 GPU particle simulations for FXSystem 0x0000000018CB4D80
[2014.07.27-01.08.02:392][546]LogMemory: Platform Memory Stats for WindowsNoEditor
[2014.07.27-01.08.02:392][546]LogMemory: Process Physical Memory: 456.87 MB used, 539.36 MB peak
[2014.07.27-01.08.02:393][546]LogMemory: Process Virtual Memory: 353.73 MB used, 504.61 MB peak
[2014.07.27-01.08.02:393][546]LogMemory: Physical Memory: 3979.52 MB used, 16339.17 MB total
[2014.07.27-01.08.02:393][546]LogMemory: Virtual Memory: 751.15 MB used, 8388608.00 MB total
[2014.07.27-01.08.02:393][546]LogMemory:
[2014.07.27-01.08.02:397][546]LogMemory: Allocator Stats for binned:
[2014.07.27-01.08.02:397][546]LogMemory: Current Memory 17592186044416.00 MB used, plus 1286.90 MB waste
[2014.07.27-01.08.02:397][546]LogMemory: Peak Memory 17592186044416.00 MB used, plus 333.21 MB waste
[2014.07.27-01.08.02:397][546]LogMemory: Current OS Memory 169.34 MB, peak 333.21 MB
[2014.07.27-01.08.02:397][546]LogMemory: Current Waste 3.89 MB, peak 4.94 MB
[2014.07.27-01.08.02:397][546]LogMemory: Current Used 17592186044416.00 MB, peak 17592186044416.00 MB
[2014.07.27-01.08.02:397][546]LogMemory: Current Slack 1283.01 MB
[2014.07.27-01.08.02:397][546]LogMemory: Allocs 1477935 Current / 288307074 Total
[2014.07.27-01.08.02:397][546]LogMemory:
[2014.07.27-01.08.02:397][546]LogMemory: Block Size Num Pools Max Pools Cur Allocs Total Allocs Min Req Max Req Mem Used Mem Slack Mem Waste Efficiency
[2014.07.27-01.08.02:397][546]LogMemory: ---------- --------- --------- ---------- ------------ ------- ------- -------- --------- --------- ----------
[2014.07.27-01.08.02:397][546]LogMemory: 8 0 0 0 0 8 0 0K 0K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 16 139 139 542791 51227658 16 16 8481K 415K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 32 90 90 164632 15547919 32 32 5144K 616K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 48 28 30 17527 52332700 48 48 821K 971K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 64 39 41 18550 52156449 64 64 1159K 1337K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 80 11 15 3276 12375180 80 80 255K 449K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 96 12 12 5901 10882589 96 96 553K 215K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 112 19 19 3311 23704117 112 112 362K 854K 0K 100.00%
[2014.07.27-01.08.02:397][546]LogMemory: 128 31 32 13247 6505273 128 128 1655K 329K 0K 100.00%

Thanks,
Dan Zaidan.