Found the way to install it!!!
I did the following:
*Execute the 1.02 digital patch
*BEFORE clicking "install" I went to "userprofile\appdata\local\temp" and found patch temp installation folder.
*There (multi\soundata\pc) I deleted foreing language .pck files so the update does no try to update the original ones with its content using xdelta (I left only eng and sfx so they does get the update)
*Then I clicked installed and all went fine! Installation completed without errors!
Thanks all of you for your kind support and help with my struggle! Trully grateful here!