Change the icon of my .exe file without getting NSIS error.

I'm trying to figure out how to change the icon of an EXE file without causing a NSIS error. I can change the icons of EXE files just fine, but with this particular EXE file it gives me a NSIS error. I'm looking for someone who can change the file's icon and allow the installer to run. Also I need you to teach me how to do it, which program you used and what you changed for it to work correctly.