GAMS World Forum

Yann, We heard already back from the Conopt developer. He acknowledges this as a true bug (which is already fixed in his development version). We will get this version next week and make it part of the next (minor/maintenance) release of GAMS 37. In the meantime, you can turn off the buggy part of ...

Yann, I have not seen this behavior in recent versions of Conopt4. It could be a scaling issue but without more details it's hard to say. You might want to send the point/solution found by Conopt3 through Examiner (https://www.gams.com/latest/docs/S_EXAMINER.html) and check externally the feasiblit...

Dear all, The model I currently use is feasible with conopt3 but not conopt4 "An equation in the pre-triangular part of the model cannot be solved because there are no non-fixed variables left". Basically, the concentration of several GHG (let call them HFCxx) depend on the concentration o...