> > Have I misunderstood?
>
> Yes, you assumed error_log was the same as
> access_log. They are not.
> access_log is part of the Log module while
> error_log is part of the main
> module. error_log (at least in 0.7.59) does not
> support variables in the
> path.
You are right, I missed that completely. Strangely this still fits the requirements, so it is not an issue for me.