!macro CustomCodePostInstall
	${If} ${FileExists} "$INSTDIR\Data\Data\*.*"
		Delete "$INSTDIR\Data\Data\extensions6\FeedReader.dll"
		Delete "$INSTDIR\Data\Data\extensions6\RetroChess.dll"
		Delete "$INSTDIR\Data\Data\extensions6\VOIP.dll"
		CopyFiles /SILENT "$INSTDIR\App\DefaultData\Data\extensions6\*.*" "$INSTDIR\Data\Data\extensions6"
	${EndIf}
!macroend