Not enough input arguments. See DDE23. Tracking discontinuities exceeded the maximum array size preference. Use DDESD to solve without tracking discontinuities. Must have tspan(1) < tspan(end). Must continue from last point reached. The lags must all be positive. DDEs must return column vectors. Derivative and history vectors have different lengths. Option ''RelTol'' must be a positive scalar. Option ''AbsTol'' must be positive. Solving with NormControl ''on'' requires a scalar AbsTol. Option ''MaxStep'' must be greater than zero. Option ''InitialStep'' must be greater than zero. Mixture of single and double data for ''t0'', ''y0'', ''y(t0-lags)'', and ''f(t0,y0,ylags)'' in call to DDE23. RelTol has been increased to {0}. Solving {0} requires a scalar AbsTol, or a vector AbsTol of length {1,number,integer} Failure at t={0}. Unable to meet integration tolerances without reducing the step size below the smallest value allowed ({1}) at time t.