Both images were quite old and with several projects open.

The hack I did brought the past the update process

Best,
Karl

On Fri, May 27, 2016 at 4:51 PM, marcel.taeumel <Marcel.Taeumel@hpi.de> wrote:
Karl Ramberg wrote
> My images usually have several projects. Could that be part of the
> problem?
>
> Best,
> Karl
>
> On Thu, May 26, 2016 at 3:16 PM, marcel.taeumel &lt;

> Marcel.Taeumel@

> &gt;
> wrote:
>
>> Karl Ramberg wrote
>> > I updated another image and ran into the same problem:
>> >
>> > Best,
>> > Karl
>> >
>> > On Tue, May 24, 2016 at 2:36 PM, karl ramberg &lt;
>>
>> > karlramberg@
>>
>> > &gt; wrote:
>> >
>> >> I changed the method as described and updated the image... No saved
>> copy
>> >> or call stack saved
>> >>
>> >> Best,
>> >> Karl
>> >>
>> >> On Tue, May 24, 2016 at 1:45 PM, marcel.taeumel &lt;
>>
>> > Marcel.Taeumel@
>>
>> > &gt;
>> >> wrote:
>> >>
>> >>> Hi Karl,
>> >>>
>> >>> can you share the problematic image?
>> >>>
>> >>> Best,
>> >>> Marcel
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> View this message in context:
>> >>>
>> http://forum.world.st/Problems-updating-canvas-being-nil-tp4896873p4897035.html
>> >>> Sent from the Squeak - Dev mailing list archive at Nabble.com.
>> >>>
>> >>>
>> >>
>> >
>> >
>> >
>> >
>> > SqueakDebug.log (16K)
>> > &lt;http://forum.world.st/attachment/4897276/0/SqueakDebug.log&gt;
>>
>> Hi Karl,
>>
>> I just updated an older image from #15844 to #15987 with many tools open
>> and
>> I did not run into your problem. It seems strange that your image has a
>> world without a canvas. Even if so, there are measures to take care of it
>> just 2-3 lines above your fix.
>>
>> :-/
>>
>> Best,
>> Marcel
>>
>>
>>
>> --
>> View this message in context:
>> http://forum.world.st/Problems-updating-canvas-being-nil-tp4896873p4897537.html
>> Sent from the Squeak - Dev mailing list archive at Nabble.com.
>>
>>

Hi Karl,

maybe. If you had multiple projects open when I made the project
refactorings, some existing world may have gotten into an invalid state.
However, the bug should have occured ealier? Which version did you try to
update from?

Best,
Marcel




--
View this message in context: http://forum.world.st/Problems-updating-canvas-being-nil-tp4896873p4897866.html
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