Dear Allin and Riccardo, Remember, some time ago, I requested escaping the underscore character in variable names for LaTeX output (otherwise, it won’t compile)? This problem still persists in gretl 2019a. Today, I tried to render the LaTeX output from a vector autoregression with l_price and l_quantity (the default naming convention), and it choked on the F test part: All lags of l_price... Could you please check all LaTeX output generators and automatically escape all underscores or other illegal LaTeX characters (or strip the ones that cannot be escaped, or replace them with dots, like R does) in variable names? Thank you in advance! Yours sincerely, Andreï. -- Bien cordialement, | Yours sincerely, Andreï V. Kostyrka. http://kostyrka.ru, http://kostyrka.ru/blog