Re: glp_intopt runs forever (related to Dusan Plavak's issue)

> For my setup, the instability appears with pre-release 4.59.2, if this
> is any help.
> 

Thanks.

The error appears on solving problem.lp with glpsol, which performs
scaling by default; however, it doesn't appear in main.cpp where scaling
is not used. Specifying tiny constraint coefficients (which normally
should be zeros) is a common error that makes the instance badly
conditioned and leads to numerical difficulties.