wrong-type-argument integer-or-marker-p nil

[zonuexe]

The cause of this problem may not be php-mode.

Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
  c-forward-sws()
  c-unfind-coalesced-tokens(1540 1541)
  c-before-change(1540 1541)
  ns-delete-working-text()
  ns-unput-working-text()
  funcall-interactively(ns-unput-working-text)
  #<subr call-interactively>(ns-unput-working-text nil [(ns-unput-working-text)])
  apply(#<subr call-interactively> ns-unput-working-text (nil [(ns-unput-working-text)]))
  call-interactively@ido-cr+-record-current-command(#<subr call-interactively> ns-unput-working-text nil [(ns-unput-working-text)])
  apply(call-interactively@ido-cr+-record-current-command #<subr call-interactively> (ns-unput-working-text nil [(ns-unput-working-text)]))
  call-interactively(ns-unput-working-text nil [(ns-unput-working-text)])
  command-execute(ns-unput-working-text nil [(ns-unput-working-text)] t)