VM can't start up with "NAT Network"

[Zooltech]

global setting:

vbox1.png (16.8 KiB) Viewed 606 times

VirtualBOX hangs up when I open the settings window of the VM using "NatNetwork". And the network setting was changed to empty.

vbox2.png (12.76 KiB) Viewed 606 times

The VM hangs up during starting time,too.


Host : Windows 7 SP1, Simplified Chinese

VBoxSVC.log

VirtualBox COM Server 4.3.2 r90405 win.amd64 (Nov 1 2013 15:06:10) release log
00:00:00.003000 main Log opened 2013-11-08T08:32:59.347181500Z
00:00:00.003000 main Build Type: release
00:00:00.003000 main OS Product: Windows 7
00:00:00.003000 main OS Release: 6.1.7601
00:00:00.003000 main OS Service Pack: 1
00:00:00.063003 main DMI Product Name: 1141AB6
00:00:00.071004 main DMI Product Version: ThinkPad E420
00:00:00.071004 main Host RAM: 4007MB total, 2528MB available
00:00:00.071004 main Executable: C:\VBOX\VBoxSVC.exe
00:00:00.071004 main Process ID: 4568
00:00:00.071004 main Package type: WINDOWS_64BITS_GENERIC
00:00:00.073004 Loading settings file "C:\Users\zooltech/.VirtualBox\VirtualBox.xml" with version "1.14-windows"
00:00:00.082004 usbLibDevCfgDrGet: DeviceIoControl 1 fail winEr (31)
00:00:00.548031 VDInit finished
00:00:00.550031 Loading settings file "G:\VDisk\Debian7\Debian7.vbox" with version "1.14-windows"
00:00:04.984285 VM 'Debian7' starts using NAT network 'NatNetwork'
00:00:04.992285 Error E_FAIL starting NAT network 'NatNetwork'
00:00:05.262319 AssertLogRel D:\tinderbox\win-4.3\src\VBox\Main\glue\string.cpp(56) void __cdecl com::Bstr::copyFromN(const char *,unsigned __int64): <NULL>
00:00:05.262319 VERR_INVALID_UTF8_ENCODING c0 26 fc 01

[noteirak]

Please attach as zip the VM log.