Dear @Danupon.Subanapong,
It looks like your OpenFAST models has gone unstable. It is unclear to me if this is because of a problem in the MoorDyn input, or that is just the error that finally causes the abort. I would suggest simplifying the model to debug, e.g., if you replace MoorDyn with an equivalent mooring preload and stiffness matrix, which you can enter into HydroDyn via inputs AddF0
and AddCLin
, is the model still unstable? Or does the model run stably with a subset of platform DOFs in ElastoDyn enabled?
Best regards,