大侠们快来帮助帮助我吧！

问题已解决，SPSS版本过高导致

Dear baizhixin, be sure that your your data for the different levels of your estimation have the same id for level one id. You must have the same level one id for the orther levels (each level must have an spss data file).
Hope that helps

4# lahraf
Thanks for your answer!

到底是什么问题呢，跪求解答。