这是要编译成EXE文件时遇到的问题 请问是哪里错了？

以下是源码
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.486
.Model Flat, StdCall

Option CaseMap:None

includelib \masn32\lib\kernel32.lib
includelib \masn32\lib\user32.lib

include \masn32\INCLUDE\user32.inc
include \masn32\INCLUDE\windows.inc
include \masn32\INCLUDE\kernel32.inc

.data
msgtitle db "Hellow world!",0
msgtitle db "This is a messagebox",0

.code

start:
invoke messagebox, null,addr msgtext,addr msgtitle, MB_OK or mb_iconinformation

end start
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[此贴子已经被作者于2007-5-3 13:14:40编辑过]