[racket] Dr Racket error OS X Lion

From: Mike Owens (m.owens at yahoo.com)
Date: Sat Aug 6 23:10:47 EDT 2011

The commenting out of line 1534 worked well. 

The problems I found with Lion has more to do with incompatibilities with software that I use. Racket 5.1.1 is one. The GPG plugin I use for Mail is another. I heard that if you have a recent MacBook pro that you can have problems with Video. My MacBook is about 3 years old. I had to unencrypted my home directory in order to use full disk encryption. For about a day your Mac is kind of slow because of the reindexing. Encrypting the 640GB disk takes about a day but that happens in the background but again slowing down your system during that time. I like Lion overall.


ᚳ Cen: the torch
The inner light which is never extinguished
brightens the dark weary world.
This body is a great hall;
the mind sits in the body's high seat.
The call to faith
a torch carrying procession.

On Aug 6, 2011, at 7:33 PM, Todd O'Bryan wrote:

> I realize there's huge reluctance to muck with a release before having
> time to check everything, but if it's possible to fix this with a
> single small change that everyone agrees is unlikely to break anything
> else, might you consider releasing a 5.1.3 or 5.1.2b or 5.1.2+ or some
> new version number? The thought of having to deal with classes of high
> school sophomores who download the latest version and then complain
> that it doesn't work is already scaring me. And having students
> download Nightly Builds means that I'd have maybe dozens of versions
> being run, all of which might work slightly differently.
> I think college students tend to be able to figure these things out
> more easily, because they either have laptops or live near other
> students and once one person figures it out, the solution spreads.
> Since high school kids tend to use the family desktop, they're sitting
> at home by themselves and even if they have access to someone who's
> figured out how to fix the error, getting the explanation over the
> phone or IM is not trivial. And that doesn't include the parents who
> don't give their kids administrative access to the machine.
> Todd
> On Sat, Aug 6, 2011 at 10:07 PM, Robby Findler
> <robby at eecs.northwestern.edu> wrote:
>> What is the exact error?
>> One of the possible (likely) issues can be fixed by removing line 1534
>> from plt/collects/framework/private/text.rkt. The line in question
>> looks like this:
>>      (set! todo '())
>> (You have to restart DrRacket after that change to see the fix.)
>> Of course, do send along the exact error, just in case you're seeing
>> something different.
>> Robby
>> On Sat, Aug 6, 2011 at 8:59 PM, Mike Owens <m.owens at yahoo.com> wrote:
>>> I just upgraded to Lion (thinking I should have waited) which forced an
>>> upgrade to Racket 5.1.2. Unfortunately there is an error when you load a
>>> Racket file or type Sexp into the Dr Racket editor. I saw on the Dev list
>>> that the error is known and is already fixed in the Repo. Is there a patch
>>> somewhere that I can get or a knew executable or something?
>>> Thanks
>>> Mike
>>> ---
>>> ᚱ Rad: riding
>>> When one sits in one's home
>>> everything looks so easy;
>>> talk is easier than action.
>>> To walk in another's shoes
>>> and do better,
>>> that is a most difficult task.
>>> _________________________________________________
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>> _________________________________________________
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