scribble error with reproviding a required function

gistfile1.txt

	examples: exception raised in example
	  error: "dynamic-require: name is protected\n  name: 'syntax-local-expand-observer\n  module: #<resolved-module-path:'#%expobs>"
	  context...:
	   do-error
	   .../scribble/eval.rkt:308:23: with-handlers-handler102
	   .../private/more-scheme.rkt:163:2: select-handler/no-breaks
	   .../scribble/eval.rkt:356:9
	   .../private/map.rkt:40:19: loop
	   [repeats 6 more times]
	   .../private/manual-vars.rkt:218:40
	   .../private/manual-vars.rkt:167:0: *deftogether
	   interpret
	   loop
	   interpret
	   [repeats 3 more times]
	   proc
	   call-in-empty-metacontinuation-frame
	   body of "/Users/siddhartha/work/lisp/racket/relation/scribblings/composition.scrbl"
	   interpret-expr

	  context...:
	   do-error
	   call-in-empty-metacontinuation-frame
	   .../setup/parallel-do.rkt:332:4: !work-done method in list-queue%
	   .../setup/parallel-do.rkt:282:17
	   .../setup/parallel-do.rkt:236:4
	   dynamic-wind
	   .../setup/scribble.rkt:138:0: setup-scribblings
	   call-in-empty-metacontinuation-frame
	   winder-dummy
	   .../setup/setup-core.rkt:72:0: setup-core
	   call-in-empty-metacontinuation-frame
	   body of "/Applications/Racket v7.8/collects/setup/main.rkt"
	   temp35_0
	   run-module-instance!
	   call-in-empty-metacontinuation-frame
	   body of "/Applications/Racket v7.8/collects/raco/main.rkt"