Thanks.

I think that for the MouseOverHandler it would be good to know if this  
is related to Sensor changes.
Mike what you think?

Stef
On Jun 4, 2009, at 1:53 AM, Gary Chambers wrote:

> That's an old one... a bit late here so look it up on Mantis.  
> ANYTHING that manipulates morphs etc. in a process other than the UI  
> process is liable to break in one way or another.
>
> The mouse over handler is just one of the most frequent (most  
> events)...
>
> The workaround we have is to do the nil check. A Workaround though...
>
> Regards, Gary
> ----- Original Message -----
> From: Hernan Wilkinson
> To: Pharo-project@lists.gforge.inria.fr
> Sent: Wednesday, June 03, 2009 8:59 PM
> Subject: Re: [Pharo-project] an odd bug
>
> I think I founded the problem... I don't know what makes it happen  
> or how to solve it yet :-)
> But the problem is a raise condition. In method  
> MouseOverHandler>>processMouseOver: anEvent the instance variable  
> leftMorphs is set to nil, but when accessing that variable there
> is no check for nil. So, if processMouseOver: anEvent is running in  
> two different processes, in one leftMorphs could set to nil while in  
> the other process is still been used...
>
> Is it possible for processMouseOver: anEvent to be evaluated in more  
> than one process? If that is true, so that is the problem... if not,  
> nothing makes sense...
>
> 2009/6/3 Mariano Martinez Peck <marianop...@gmail.com>
> I didn't know that. logDebuggerStackToFile is the option?
>
> It's strange because this is enable by default and I don't think  
> Sean change it.
>
>
>
> On Wed, Jun 3, 2009 at 5:39 PM, Nicolas Cellier 
> <nicolas.cellier.aka.n...@gmail.com 
> > wrote:
> This is controlled by a Preference setting...
>
> Nicolas
>
> 2009/6/3 Sean Allen <s...@monkeysnatchbanana.com>:
> > dont have one. there isnt any debug.log in the directory with the  
> image ( or
> > any other pharo associated directory. )
> >
> > 2009/6/3 Mariano Martinez Peck <marianop...@gmail.com>
> >>
> >> It would be helpful if you attach debug.log. This file is located  
> in the
> >> same directory where the image is.
> >>
> >> Cheers,
> >>
> >> Mariano
> >>
> >> 2009/6/3 Sean Allen <s...@monkeysnatchbanana.com>
> >>>
> >>> that i dont really know how to describe... so i'm going to  
> attach a
> >>> screenshot...
> >>> i opened the lastest pharo dev image... checked to see if the  
> redraw bug
> >>> that i have been experiencing was still there...
> >>> went to quick and got a sudden flurry of message not understood  
> errors (
> >>> see screenshot of the rearranged windows )...
> >>> i wasnt able to reliably reproduce but, when doing the same  
> thing ( open
> >>> and quit... ) about 2 out of every five times i
> >>> got message not understood windows popping up.
> >>>
> >>>
> >>> _______________________________________________
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> >>
> >>
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