Not enough input arguments. See ODE78. MassSingular value is ''maybe'', but this solver always assumes MassSingular is ''no''. ODE15S and ODE23T allow singular mass matrices. MassSingular value must be ''no'' for this solver. ODE15S and ODE23T allow singular mass matrices. Failure at t={0}. Unable to meet integration tolerances without reducing the step size below the smallest value allowed ({1}) at time t.