Unknown exception - code c06d007e (first/second chance not available),[Crash] Please help me]Unknown exception - code c06d007e (first/second chance not available)

When i just add some textures it suddenly crashes. This is the crash report :

Unknown exception - code c06d007e (first/second chance not available)

KERNELBASE
UE4Editor_TextureFormatDXT!__delayLoadHelper2() [f:\dd\vctools\delayimp\delayhlp.cpp:323]
UE4Editor_TextureFormatDXT!_tailMerge_nvtt_64_dll()
UE4Editor_TextureFormatDXT!FNVTTCompressor::FNVTTCompressor() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:129]
UE4Editor_TextureFormatDXT!CompressImageUsingNVTT() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:324]
UE4Editor_TextureFormatDXT!FTextureFormatDXT::CompressImage() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:481]
UE4Editor_TextureCompressor!FAsyncTask::DoWork() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\async\asyncwork.h:263]
UE4Editor_TextureCompressor!FAsyncTask::DoThreadedWork() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\async\asyncwork.h:288]
UE4Editor_Core!FQueuedThread::Run() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\hal\threadingbase.cpp:451]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]

Crash report image : https://imgur.com/D48QodR,When i just import some images

Unknown exception - code c06d007e (first/second chance not available)

KERNELBASE
UE4Editor_TextureFormatDXT!__delayLoadHelper2() [f:\dd\vctools\delayimp\delayhlp.cpp:323]
UE4Editor_TextureFormatDXT!_tailMerge_nvtt_64_dll()
UE4Editor_TextureFormatDXT!FNVTTCompressor::FNVTTCompressor() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:129]
UE4Editor_TextureFormatDXT!CompressImageUsingNVTT() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:324]
UE4Editor_TextureFormatDXT!FTextureFormatDXT::CompressImage() [d:\build++ue4+release-4.18+compile\sync\engine\source\developer\textureformatdxt\private\textureformatdxt.cpp:481]
UE4Editor_TextureCompressor!FAsyncTask::DoWork() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\async\asyncwork.h:263]
UE4Editor_TextureCompressor!FAsyncTask::DoThreadedWork() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\public\async\asyncwork.h:288]
UE4Editor_Core!FQueuedThread::Run() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\hal\threadingbase.cpp:451]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]

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Thanks