unable to install via quicklisp

[martianhi]

i'm running SBCL, with slime.

when i call (ql:quickload :cl-unicode) i get an error as follows

no symbol named "*STANDARD-OPTIMIZE-SETTINGS*" in "CL-PPCRE"

if i intern it, i get:

compile-file-error while
compiling #<cl-source-file "cl-unicode/base" "util">

and:

; processing (DECLAIM (INLINE COMPUTE-HANGUL-NAME))
; 
; caught ERROR:
;   READ error during COMPILE-FILE:
;   
;     The variable *STANDARD-OPTIMIZE-SETTINGS* is unbound.
;   
;     (in form starting at line: 219, column: 0, position: 9870)

; compilation aborted after 0:00:00.156

the variable is from cl-ppcre, which is currently loaded.