Have you trying updating from git?
On Mon, Jan 29, 2018 at 1:09 PM Didier Verna <didier@lrde.epita.fr> wrote:
Luís Oliveira <luismbo@gmail.com> wrote:

> Can you show us more of the backtrace and your config (both the elisp
> side and .swank.lisp)? I suspect you may have selected a non-supported
> communication style. (Granted, if that's the case, SLIME should have
> failed more gracefully.)

  FWIW, I've tried all communication styles this morning, and none of
  them work. :SPAWN hangs, and the other ones lead to the exact same
  error as with :SIGIO (the one I used without even knowing it as it is
  the default).

--
Resistance is futile. You will be jazzimilated.

Lisp, Jazz, Aïkido: http://www.didierverna.info