Seen on squeak-dev and submitted to the Pharo tracker: http://code.google.com/p/pharo/issues/detail?id=898 ---------- Forwarded message ---------- From: Bert Freudenberg <bert@freudenbergs.de> Date: Wed, Jun 17, 2009 at 1:55 PM Subject: [squeak-dev] [FIX] MessageNotUnderstood: UndefinedObject>>something To: The general-purpose Squeak developers list <squeak-dev@lists.squeakfoundation.org> Hi folks, we have all seen numerous questions from newbies like this: On 17.06.2009, at 13:25, Bert Freudenberg wrote:

On 17.06.2009, at 12:56, Tim Patti wrote:

...

I'm getting a debug window with MessageNotUnderstood: UndefinedObject>>binary.

Which tells you that "fileHandle" is nil.

IMHO it would help if we special-cased the MNU text for a nil receiver. In that case, I propose the message should read        MessageNotUnderstood: receiver of "something" is nil which might point beginners to the actual cause. Attaching proposed fix. - Bert - -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry