See the following thread on the ETSAP Forum for some good advice: Scaling issue
BTW: Looking at your listing file, I can see that you have 3613 GAMS warnings:
170 Domain violation for element
**** 0 ERROR(S) 3613 WARNING(S)
Such can cause various unpredicted problems. I suggest to get rid of them, either by fixing the model, or if for some reason you want to keep these errors in your model, at least by using the $SET DATAGDX YES switch.
BTW: Looking at your listing file, I can see that you have 3613 GAMS warnings:
170 Domain violation for element
**** 0 ERROR(S) 3613 WARNING(S)
Such can cause various unpredicted problems. I suggest to get rid of them, either by fixing the model, or if for some reason you want to keep these errors in your model, at least by using the $SET DATAGDX YES switch.