2 things, one bug and one feature
 

I uploaded the install file after it was all compiled and all that, works fine, then when i downloaded it to test it out again, i got an error saying: Not a valid win32 file. or something along those lines. also, is it possible to make an option for the program to run automatically once install finished?

1. transfer error OR ftp text mode OR .. a lot of variants :)
2. MUI_FINISHPAGE_RUN exe_file OR MUI_FINISHPAGE_RUN_FUNCTION (Modern UI\Readme.html) OR Manual 4.7.2.1.4 .onInstSuccess

Mind giving me an example? that doesn't work.

!define MUI_FINISHPAGE_RUN "$INSTDIR\MyApp.exe"
!insertmacro MUI_PAGE_FINISH

-Stu