Ok down to the point I was firing at those Viperbolt turret and the game crashed on my giving me this report:

Log: Script call stack:
 Function UTGame.UTProjectile:Destroyed
 Function UTGameContent.UTProj_ViperBolt:SpawnExplosionEffects

Critical: appError called:
Critical: UTProj_ViperBolt VCTF-Torlan_v124.TheWorld:PersistentLevel.UTProj_ViperBolt_3529 (Function UTGameContent.UTProj_ViperBolt:SpawnExplosionEffects:0000) Infinite script recursion (250 calls) detected
Critical: Windows GetLastError: The operation completed successfully. (0)
Log: === Critical error: ===
UTProj_ViperBolt VCTF-Torlan_v124.TheWorld:PersistentLevel.UTProj_ViperBolt_3529 (Function UTGameContent.UTProj_ViperBolt:SpawnExplosionEffects:0000) Infinite script recursion (250 calls) detected

RaiseException() Address = 0x7599b727 (filename not found) [in C:\Windows\syswow64\KERNELBASE.dll]
CxxThrowException() Address = 0x73808e89 (filename not found) [in C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5\MSVCR80.dll]
Address = 0xbb4f92   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xb542f9   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xbcbc27   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xb5426a   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xbd3a2e   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xbc5cff   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]
Address = 0xbc5cff   (filename not found) [in C:\Program Files (x86)\Unreal Tournament 3\Binaries\UT3.exe]

Strange never had a crash with this before.