I've run twice today into a situation where, after having failing
tests in the TestRunner, "right click"ing the desktop results in a
MessageNotUnderstood: MethodReference>>do:.
The "aCollection" being passed around is actually a MethodReference:
MessageTrace >> browseAllImplementorsOf:.
If you open a Trunk (11458), run the ToolsTest suite, you'll see two
failing tests. Click the top failing test, and the debugger pops up.
Now yellow-click (?) the desktop, and you'll see the error.
Close the failing-test-debugger, and the problem disappears!
Reported on Mantis:
http://bugs.squeak.org/view.php?id=7642frank