How to fix this? I have the same problem. No icon displayed. Here is my code:
!include "MUI2.nsh"
OutFile "out\myapp.exe"
Icon "original\app.ico"
RequestExecutionLevel user
SilentInstall silent
SetCompressor LZMA
!define MUI_ICON "original\app.ico"
;!insertmacro MUI_UNPAGE_CONFIRM
;!insertmacro MUI_UNPAGE_INSTFILES
;!insertmacro MUI_LANGUAGE "English"
Section
InitPluginsDir
SetOutPath $PLUGINSDIR
File /r original\*.*
ExecWait '"$PLUGINSDIR\commrun.exe" --pluginNames webserver'
Delete "$PLUGINSDIR\*.*"
SectionEnd