Problems building a V2 windows installer

I'm trying to build an installer for Windows using the Wireshark 2.0.0rc2 sources and cmake.

I have built the main executable using

"c:\Program Files (x86)\CMake\bin\cmake.exe" -DENABLE_CHM_GUIDES=on D:\wireshark-2.0.0rc2 msbuild /m /p:Configuration=RelWithDebInfo wireshark.sln

This works and I get an executable that runs. I now want to build and installer package. So I tried the command

msbuild /m /p:Configuration=RelWithDebInfo nsis_package.vcxproj

This stops with the error

    Section: "-Required"
    SetShellVarContext: all
    SetOutPath: "$INSTDIR"
    File: "D:\wireshark-2.0.0rc2\build-win32\run\RelWithDebInfo\uninstall.exe" -> no files found.
    Usage: File [/nonfatal] [/a] ([/r] [/x filespec [...]] filespec [...] |
       /oname=outfile one_file_only)
    Error in script "wireshark.nsi" on line 349 -- aborting creation process

And sure enough there is no uninstall.exe in the build directory. So which step am I missing to create one

I tried commenting out the line 349 in wireshark.nsi to see if it worked and it then fails a bit further on with the error..

    SetOutPath: "$INSTDIR"
    File: "Wireshark.exe" 6253568 bytes
    !include: could not find: "qt-dll-manifest.nsh"
    Error in script "wireshark.nsi" on line 876 -- aborting creation process

So is there a step I'm missing to get things ready to build the installer.

Thanks for any help