> - is the problematic column created as 'null' or 'not null'? what happens if you change the nullability?
The column is created as nullable. I'll test it as not null (I suspect it will work)
> - are you using a C# program that utilizes the bulk copy libraries ?
C# ADO AseBulkCopy()
> - what is a sample data row that fails during bcp in?
This row fails
100000,1,1,1,,0
> - what happens if you use the INSERT command to insert a row, bcp the row out, and then bcp the row in? success or failure?
Yes - command line BCP works fine.