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Repeatedly crashing when I try copying files over to a new foler

heres the crash log

Fatal error: [File:F:\Projects\ARK\UE4\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 91]
ShaderCompileWorker crashed!

Fatal error: [File:H:\ArkSVN-Trunk-H\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 51]
Ran out of memory allocating 458752 bytes with alignment 0

VERSION: 0.0
KERNELBASE.dll!UnknownFunction (0x00007ffd0327a388) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-Core.dll!UnknownFunction (0x00007ffce9c0bf9d) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-Core.dll!UnknownFunction (0x00007ffce9b1b624) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-Core.dll!UnknownFunction (0x00007ffce9a19015) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-Core.dll!UnknownFunction (0x00007ffce9b67184) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-Core.dll!UnknownFunction (0x00007ffce9a32555) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-ShaderPreprocessor.dll!UnknownFunction (0x00007ffce97f7765) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-ShaderFormatD3D.dll!UnknownFunction (0x00007ffcff3c6d34) + 0 bytes [UnknownFile:0]
ShaderCompileWorker-ShaderFormatD3D.dll!UnknownFunction (0x00007ffcff3c9d5f) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab937f49) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab935375) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab933c16) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab933ceb) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab93b711) + 0 bytes [UnknownFile:0]
ShaderCompileWorker.exe!UnknownFunction (0x00007ff7ab93c01b) + 0 bytes [UnknownFile:0]
KERNEL32.DLL!UnknownFunction (0x00007ffd05953dc4) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffd06e63691) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffd06e63691) + 0 bytes [UnknownFile:0]

Ran out of memory.

How would I fix this?