I have setup project that I need to sfx him .
first I zip the .msi and .exe files :
%path7zip% a \"%~dp0% %setup.7z\" \"%~dp0% %Output\\Setup\\*\" >
captain_majid's solution worked for me. I also found in this post at SourceForge the suggestion to use -mm=lzma when generating the 7z file, which worked as well.
-mm=lzma
Would be nice to know the difference, though.