[racket] Error installing whalesong

Following instruction per http://hashcollision.org/whalesong/, I tried to run

#lang racket/base
(require (planet dyoo/whalesong:1:12/make-launcher)) in DrRacket. (v
5.2 with unlimited memory flag, OSX Snow Leop with 1GB memorty)

Dr complains during installation:

Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for <planet>/dyoo/whalesong.plt/1/13
(Whalesong)
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for
<planet>/dyoo/whalesong.plt/1/13/js-assembler
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for <planet>/dyoo/whalesong.plt/1/13/make
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)

$./whalesong complains:

Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for <planet>/dyoo/whalesong.plt/1/13
(Whalesong)
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for
<planet>/dyoo/whalesong.plt/1/13/js-assembler
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)
raco setup: error: during making for <planet>/dyoo/whalesong.plt/1/13/make
raco setup:   Type Checker: Internal Typed Racket Error :
#(struct:exn:fail:contract:arity procedure resolve-once: expects 1
argument, given 0 #<continuation-mark-set>)

...

BTW, what is the timeline on supporting #lang racket/base? Any plan on
#lang (for module)?

Regards,

jGc