Module browser & macro-debugger/analysis/show-dependencies fail in DrRacket only

This program (an example from the docs) works with command-line racket, but fails in DrRacket:

#lang racket

(require macro-debugger/analysis/show-dependencies)

(get-dependencies 'openssl #:exclude '(racket))

The error message is:

expand: namespace mismatch; cannot locate module instance
  module: #<module-path-index:"errortrace-key.rkt" errortrace/errortrace-lib>
  use phase: 0
  definition phase: 0
  for identifier: #<syntax:/Applications/Racket v7.2/share/pkgs/errortrace-lib/errortrace/errortrace-lib.rkt:256:58 errortrace-key>

I get the same error message in a dialog when attempting View > Show Module Browser on any program I've tried it with so far, including the program above. The command-line raco show-dependencies seems to work fine.

I can get this program to run in DrRacket and View > Show Module Browser to work if, in the expanded Choose Language… dialog, I select the No debugging or profiling radio button under Dynamic Properties. I think that confirms that the error is related to errortrace (as the message suggested), though I don't really know if the fault lies with the way DrRacket uses errortrace or with errortrace itself.

Start with the Racket example in the issue and reproduce it in DrRacket with the default debugging or profiling setting. Compare the failing Module Browser and macro-debugger/analysis/show-dependencies behavior with command-line racket and raco show-dependencies; done means both DrRacket operations work without selecting “No debugging or profiling.”