If Xanalys' HyperSpec upgrade screwed up your hyperspec-naggum.el (which is what I use), Edmund Weitz explains how to fix it:

  The current CVS version of ILISP has a fix for this.

  If you want to keep your ILISP version you can replace the file
  'hyperspec-naggum.el' with this one:
  <http://weitz.de/files/hyperspec-naggum.el>. Make sure to set
  'common-lisp-hyperspec-symbol-table' to the correct value for
  your local installation of the CLHS.