Fail to install haskell platform on Windows

I can't run WinGHCi after my installation. When I use command "ghci" in cmd, it returns:

GHCi, version 8.2.1: http://www.haskell.org/ghc/  :? for help
ghc.exe: internal error: mkPath failed converting char* to wchar_t*
    (GHC version 8.2.1 for x86_64_unknown_mingw32)
    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

I had tried to reinstall or download the Core(64-bit) version, but nothing changed. I think there's nothing wrong with my install precedure.

Sorry for my poor English!

BTW, my windows is under Chinese code system. I don't know whether this matters or not.

Trac metadata

Trac field	Value
Version	8.2.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	GHCi
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