On Jan 18, 2011, at 6:09 PM, wangwallace wrote:
Peter,
I found it. There is a missing value under column SubID. I filled it
out
with an ID number, and the error message never occur again. Although
I found
the problem, I have no idea why would this be associated with such
an error
message.
Please re-read the error message. It seems to (adequately) cover the
situation you describe.
If anybody else have some input, I would really appreciate it. :)
--
David Winsemius, MD
West Hartford, CT
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