Obscure inspector errors on printString failure
If you inspect an object with the GemStone-enhanced Trippy
inspectors in VisualWorks 7.x, objects in element lists on the
left-pane of the browser will be sent the message #printString.
If that object, or a child of that object gets an error during
the execution of printString, or does not understand #printString,
the inspector will give that error which may be difficult to debug.
Use shift-inspect to open an old inspector on the object.