[Winpcap-users] Windows 7 Pro x64 RE Install Fails

[Fred Marshall]

Windows 7 Pro x64
Had Wireshark and WinPCAP installed and working.
Downloaded latest Wireshark and WinPCAP.
Have Uninstalled, Deleted, Run Revo Uninstaller etc. etc. but the same 
problem keeps occurring and I can't successfully install WinPCAP:

The WinPCAP 4.1.2 Setup Errors opening file for writing:

C:\Windows\system32\Packet.dll

Retry hits the same error.
Ignore yiels: An error occurred while installing the NPF driver 
(0x00000430)

Install.log:

WinPcap 4.1.0.2001 Installation LOG
-----------------------------------------------------
Debug Information


Operating system detected on registry: 7 - AMD64
True operating system (kernel.dll):    7 - AMD64
npptools.dll present on the system:    false
netnm.inf present on the system:       false
nmnt.sys present on the system:        false

End of log
-----------------------------------------------------

I've run the Wireshark install "as Administrator" with the same results.

What shall I do?  I'm stuck.

Thanks,

Fred