FileCopy - Failed to copy [%BaseDir%\Mount\Win7PESE\Source\BootWimSrc\Windows\Bo

Each I start building the PE it stops with an error. The error is here...

FileCopy - Failed to copy [%BaseDir%\Mount\Win7PESE\Source\BootWimSrc\Windows\Boot\EFI\bootmgfw.efi] to: [%BaseDir%\Target\Win7PESE\efi\boot\bootx64.efi]: The system cannot find the path specified.


Please help... The log file is attached here.

That file should be exists in every x64 win7 version.
Make sure yourself if the file exist inside boot.wim.

I too am having the same problem. My computer is a 32 bit computer. my windows 7 is 32 bit. I do not want to build a 64 bit win7pese. I do not seem to be able to find the area to limit the build to 32 bit only.can someone  please guide me to the correct area in win7pese to disable the 64 bit creation?  Your help is appreciated, Thank You

I figured it out.
I was using a ISO that I had slip streamed SP1 into.
For some reason WinBuilder was seeing the ISO as 64 bit in the image configuration area.
As soon as I changed the source to a known 32 bit windows 7 and clicked the green arrow in the image configuration area it changed the architecture to x86.
So after it gets done extracting the install.wim I will try the build again.