I use 7zip to create the SFX as follows:
7z.exe a -r archive.7z *
Then I do a binary copy with the 7zS.sfx file (used to create a self extracti
Put MiscFlags="4" in your config file. That should fix your problem.
MiscFlags="4"
It should look like this:
;!@Install@!UTF-8! RunProgram="setup.exe" GUIMode="1" Path="%tmp%\\mytemp" MiscFlags="4" ;!@InstallEnd@!