I can't extract Note 7 system.img using ImgExtractor 1.3.7 and SVAImgUnpack

I can't extract Note 7 system.img using ImgExtractor 1.3.7 and SVAImgUnpack.
When i try to extract Note 7 system.img using ImgExtractor 1.3.7 and SVAImgUnpack it freezes.
I waited 10~15 minutes but nothing happened.
How can i extract Note 7 system.img?

PC Specification
Acer Aspire V5-132
Windows 10 Home 64-bit Build 14393.105 (Release Preview Ring)
Intel Celeron 1019Y
Intel HD Graphics 3rd Gen Driver 10.18.10.4425
DirectX 11
RAM 6GB
HGST HDD 500GB

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