– Whenever possible, pass the “tex” option to Dynare commands instead of
fiddling with options_.TeX;
— For the remaining explicit options_.TeX and also for options_.debug,
use a boolean value instead of an integer.
With the former optimizer, the ML estimation under Octave would lead to a point
with a non-positive covariance matrix for shocks; in turn this would be an
unsuitable starting point for the subsequent Bayesian estimation