Hello,
if you want MC in winpe 4.0, you have to copy from win8_x?? the folowing files and from the following directories:
oledlg.dll.mui C:\windows\system32\en-EN ----> X:\windows\system32\en-EN
oledlg.dll.mui c:\windows\syswow64\en-EN ----> X:\windows\syswow64\en-EN
oledlg.dll c:\windows\syswow64 ----> X:\windows\syswow64
oledlg.dll c:\windows\system32 ----> X:\windows\system32
You can add them also before you build your winpe.
Greeting from south-west Germany
Yours
Ulrich