re-downloading madde would not change a thing; most probably the file is fine. Checksumming the file would tell whether the install file is exactly the original. There is MD5SUMS in the download directory could be used to verify the installer (but dont't ask me how that is done on windows before MADDE is installed). Anyway the installer is most probably correct; the target creation would fail differently if not. What you could test is to copy the installer file to the same partition as where MADDE is being installed and see if that helps. If it does we have to check the cause...