64bit: nsis and registry HKLM/Software = access denied

i like to export the settings of my firewall, this feature is only available in next version which ist buggy beta.

so i tried hklm\software\my_software but i cant.
HKCU\Software\my_software is possible and also HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID

neither reg.exe nor regedit.exe and ${registry::SaveKey} does not work
at least i tried SetRegView but also no way.

i need to export HKEY_USERS\S-1-5-21-2125712889...\Software but this is not convenient.

the script is working perfectly on win7/32bit but not on 64bit.
64bit in generell is complete new to me.

pls help.

i cant this one working - HKLM is not exported

!include "x64.nsh"

  ${If} ${RunningX64}
    ; disable registry redirection (enable access to 64-bit portion of registry)
    SetRegView 64
    ; export
    ${registry::SaveKey} "HKEY_CURRENT_USER\Software\my_software"  "$INSTDIR\Backup\$HKCU" "" $0
    ${registry::SaveKey} "HKEY_LOCAL_MACHINE\SOFTWARE\my_software" "$INSTDIR\Backup\$HKLM" "" $0
  ${EndIf} 

...

Ok RegReadStr works, so its a limitation of the registry plugin!?

solved - registry v4.1 works, needed an update here