st: Stata closes when I run my models

[kporter@email.unc.edu]

Hello all,

Something mysterious has happened.  I am trying to run negative 
binomial models in Stata 9.2. I did this with the same data set and 
code several weeks ago and it worked fine; however they now shut Stata 
down ("Stata has encountered a problem and needs to close.  We are 
sorry for the inconvenience.")  Poisson models will also no longer run, 
linear regressions seem to work fine.  I tried nbreg on another machine 
that has Stata 7 and it worked just fine but Stata 7 doesn't have nlcom 
which I need to use.  A friend tried it out on his Mac (Stata 9) and it 
worked.  I have tried multiple machines (all on the UNC campus), 
re-saving the dataset to different files, using subsets of the data, 
etc.  The data set is in Excel and after I bring it into Stata I can do 
things like generate summary statistics on the variables I'm using but 
once I try to run a model - bam!  Down it goes.  I'm getting kind of 
desperate!  Here is the error signature:

AppName: wsestata.exe	 AppVer: 9.0.432.0	 ModName: ntdll.dll
ModVer: 5.1.2600.2180	 Offset: 00010f29

Thank you for any help you can provide!!!

Kim
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