so you have new 2017 macros in your tex installation but have not rebuilt the formats fmtutil-sys --all should fix things most likely David On 26 February 2017 at 22:47, Bob Tennent <rdt at cs.queensu.ca> wrote: >>| what is the date of your format? I have LaTeX2e <2017/01/01> patch level 3. > > LaTeX2e <2016/03/31> patch level 2 >