Failed to initialize MPSSE: device not found

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What steps will reproduce the problem?
1. Use PC to install mingw with msys shell.
2. install libftdi1-1.0_devkit_mingw32_17Feb2013.zip
3. install libmpsse-1.3.
4. use C232HM USB 2.0 Hi-Speed to MPSSE cable.

What is the expected output? What do you see instead?
Should work.
After run spiflash.exe, shows "Failed to initialize MPSSE: device not found"

What version of the product are you using? On what operating system?
libmpsse-1.3 on windows8 mingw.

Please provide any additional information below.
Issue24 has the same issue.  But I don't know how to run as root in mingw msys 
shell.

Original issue reported on code.google.com by [email protected] on 16 Dec 2013 at 10:30