[Coin-lpsolver] Clp Problems

[Kyle Ellrott]

I'm currently working on some software that uses the Cbc module to 
solve an integer programming problem.  While I'm not confident that my 
constraint matrix has been set up correctly, as far as I know, it 
should be fine.
I was wondering if anyone could help figure out what set of events 
would trigger the following assertion:

ClpSimplexDual.cpp:2031: failed assertion 
`oldValue>=-dualTolerance_*1.0001'

What kind of problems is their assertion typically in response to?

Thanks,

Kyle