Huw,

See a proposal for a quick fix below using the work of Colin Putney last week.

--Hannes

On 12/3/15, David T. Lewis <lewis at mail.msen.com> wrote:
> Huw,
>
> The timing of your question is perfect :-)
>
> There are some very recent updates (in the last week or so) to the Squeak
> trunk development stream that address this problem.

A copy of the mail describing these updates is here
http://wiki.squeak.org/squeak/6218

This is work in
> progress,
> but in a nutshell, the latest trunk fixes should resolve the problem for
> 4.6 images, but there is work still to be done in order to make it work
> in 5.0 Spur. We still need to get these latest updates into the standard
> update stream for squeak46, but as soon as that is complete it should work
> for those images.

The updates Colin Putney committed to the trunk on Friday, Saturday
27/28th Nov are

Name: Environments-cwp.60
Author: cwp
Time: 27 November 2015, 5:14:36.376 pm
UUID: c8836cde-f21e-4652-a2e9-73f8de6f00e0
Ancestors: Environments-kfr.59

Always serialize Bindings as DiskProxies.


Name: System-cwp.781
Author: cwp
Time: 27 November 2015, 5:22:38.591 pm
UUID: c0ffbab7-f7ee-4966-ba07-d57436ac42f2
Ancestors: System-mt.780

Remove specialized serialization of Associations.
Since associations are no longer used as globals, we never need to
serialize them using DiskProxy.


Name: System-cwp.782
Author: cwp
Time: 27 November 2015, 9:00:42.904 pm
UUID: ae1f1166-0438-4e78-8ded-46c59c212210
Ancestors: System-cwp.781

Reload DiskProxies using the current environment

When looking up objects from the destination image, DiskProxies should
use the current environment, rather than referring to to Smalltalk.
This lets objects on disk be loaded into arbitrary environments.

These updates are committed to the trunk (i.e. the ongoing development
after the release of 5.0). However  in a trunk image
http://build.squeak.org/job/Trunk/default/lastSuccessfulBuild/artifact/target/TrunkImage.zip
they do NOT work yet.


What you could do as of now
-----------------------------------------

- File in the updates above into a 4.6 image.
- It should fix the problem (I have not tried yet, so please report if
it is successful).




> I am less certain of the timing for 5.0 images.

The reason is that the new VM crashes, and Colin has reported this to
the Virtual Machine List.



> Dave
>
>
>
> On Thu, Dec 03, 2015 at 01:25:37AM +0000, Huw Lloyd wrote:
>> Arbitrarily picking an earlier version ... 4.1 does not have this
>> issue/bug.
>>
>> Any quick fixes for this?  I'm interested in using this in conjunction
>> with
>> aida.
>>
>> Best,
>> Huw
>>
>>
>> On 3 December 2015 at 01:13, Huw Lloyd <huw.softdesigns at gmail.com> wrote:
>>
>> > For both 4.6 & 5.0 on the mac, saving a project generates the following
>> > error: "NotImplemented: ClassBinding or a superclass should implement
>> > objectForDataStream."
>> >
>> > The comments in the method suggest this shouldn't have been released to
>> > a
>> > stable version: "It's not yet clear how serialization should work in
>> > the
>> > presence of environments".
>> >
>> > Problem 2 is that if I then "abandon" the error messge, the workspace
>> > is
>> > then flooded with "MessageNotUnderstood" error boxes.
>> >
>> > Is "environments" something experimental that should be switched off?
>> >
>> > Best,
>> > Huw
>> >
>> >
>> >
>
>>
>
>
>