On 15/09/2010, at 2:51 PM, Joseph Wright wrote: > This will give an error even though expl3 loads etex for allocation to the extended pool. Inserts to have a set of registers available with the same numbers, and these need to be in the standard pool. > > The issue isn't unique to expl3, and doesn't show up unless you add quite a lot more register use on top of it. Is there any chance that this the same problem that's been reported recently here: <http://github.com/wspr/fontspec/issues#issue/69> ? (I haven't had time to look, yet.) Is there conceivably a bug in etex.sty? -- Will