GSMportableapps.cominstallercustom.nsh

!macro CustomCodePreInstall
    ${If} ${FileExists} "$INSTDIR\App\AppInfo\AppInfo.ini"
        ReadINIStr $0 "$INSTDIR\App\AppInfo\appinfo.ini" "Version" "PackageVersion"
        ${VersionCompare} "$0" "3.0.153.3" $1
        ${If} $1 == "2"  ;$0 is older than
        ${AndIf} ${FileExists} "$INSTDIR\Data\settings\config\*.*"
            RMDir /r "$APPDATA\GameSave Manager 3"
            CopyFiles /SILENT "$INSTDIR\App\GameSaveManager\settings\*.*" "$INSTDIR\Data\settings\config"
            RMDir /r "$INSTDIR\App\GameSaveManager\settings"
        ${EndIf}
    ${EndIf}
!macroend