[Nut-upsuser] Windows 7 x64 : blazer_usb.exe has stopped working

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Hello.
I have a problem with NUT build 2.6.1-1 for Windows. UPS driver (i
need blaser_usb.exe) go into crash on Windows 7 x64 SP1, also I tried
Windows XP x32 in Virtual PC and in VMware Workstation, results are
the same.
NUT Driver installed as described : libusb-win32 devices - NUT USB
driver. (libusb0.dll, libusb0.sys ver.1.2.2.0)
A tred also libusb from not NUT (drv. version 1.2.5.0) Crash was in
the same plase - Fault Module Name: msys-1.0.dll

1) Is it possible to run (test/debug)  NUT driver in x64 OS ?
2) And is it compatible with USB pass-through to GuestOS?

Vladimir.

===============================================
This is crash report from Windows 7 x64 with NUT 2.6.1.-1 / NUT USB
driver ver.1.2.2.0

Problem signature:

Problem Event Name: APPCRASH

Application Name: blazer_usb.exe

Application Version: 0.0.0.0

Application Timestamp: 4e1178f5

Fault Module Name: msys-1.0.dll

Fault Module Version: 1000.15.0.0

Fault Module Timestamp: 4c33a8d2

Exception Code: c0000005

Exception Offset: 0005d806

OS Version: 6.1.7601.2.1.0.256.4

Locale ID: 1033

Additional Information 1: 0a9e

Additional Information 2: 0a9e372d3b4ad19135b953a78882e789

Additional Information 3: 0a9e

Additional Information 4: 0a9e372d3b4ad19135b953a78882e789