The tiny GAMS program below (meaningless as such, only purpose is to reproduce the problem) causes a fully reproducible crash in GAMS v28.1 (discovered by a colleague, while trying my GAMS code). However, all earlier versions seem to work well with it, as I think should be the case. Can anyone expla...
The description for the .fx variable attribute is given as follows: ------- Gams UsersGuide: .fx : The fixed value for the variable. GAMS allows the user to set variables through the .fx variable suffix. This is equivalent to the lower bound and upper bound being equal to the fixed value. Fixed variabl...