Steel Bank Common Lisp

Hello all,

I have trouble compiling tinaa, a documentation generator for Common
Lisp, with SBCL 0.9.9.

I get an error message like the following on an (asdf-install:install
"tinaa")

debugger invoked on a SB-INT:BUG:
    full call to SB-KERNEL:DATA-VECTOR-REF
  This is probably a bug in SBCL itself. (Alternatively, SBCL might have been
  corrupted by bad user code, e.g. by an undefined Lisp operation like
  (FMAKUNBOUND 'COMPILE), or by stray pointers from alien code or from unsafe
  Lisp code; or there might be a bug in the OS or hardware that SBCL is running
  on.) If it seems to be a bug in SBCL itself, the maintainers would like to
  know about it. Bug reports are welcome on the SBCL mailing lists, which you
  can find at <http://sbcl.sourceforge.net/>.

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [RETRY ] Retry performing #<COMPILE-OP NIL {C119091}> on
              #<ASDF:CL-SOURCE-FILE "utilities" {B85F5F1}>.
  1: [ACCEPT] Continue, treating #<COMPILE-OP NIL {C119091}> on
              #<ASDF:CL-SOURCE-FILE "utilities" {B85F5F1}> as having been
              successful.
  2: [RETRY ] Retry installation
  3: [ABORT ] Exit debugger, returning to top level.

(SB-INT:BUG "full call to ~S")
0]

As the message says it might be a bug in SBCL I thought posting might be
useful.

Thanks for any help,

Florian