Alice(Libo) Sun
> Really appreciate your response to my question. You are
> absolute right at suggesting me reading Statlist FAQ before
> posting messages. I also change Microsoft settings and hope
> the winmail.dat problem is fixed.
No, it's not. Your winmail.dat file is still attached. See
the Statalist archives.
> I checked again following your suggestion.I found out that I
> was using 'regress Y x1, cluster(ID)'. The option of cluster
> gives me the trouble.
>
> Thanks again for your help. This is my first time using "set
> trace on"; and it is quite useful.
OK.
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