here's a crash i've never seen before. so strange. any thoughts?

[62990.49] Log: User file is C:\kf2server - normal newmaps\KFGame\Logs\Launch.log
[62990.49] Log: User file is C:\kf2server - normal newmaps\KFGame\Logs\unreal-v10897-2015.07.20-00.05.21.dmp
[62990.49] Log: === Critical error: ===
Fatal error!

Address = 0x404c2876 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fd1aa18 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3ffa1043 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fe57948 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fe4e673 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fe57640 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fe5f029 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fdbd478 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x3fd8903a (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x4047680f (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x4047772d (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x404777fa (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x404778b1 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x40692c53 (filename not found) [in C:\kf2server - normal newmaps\Binaries\Win64\kfserver.exe]
Address = 0x76af652d (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x76d2c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x76d2c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

[62990.50] Exit: Executing UObject::StaticShutdownAfterError
[62990.50] Exit: Executing UWindowsClient::ShutdownAfterError
[62990.59] Log: appRequestExit(1)

here's a crash i've never seen before. so strange. any thoughts?