I have students and teachers that have developed projects in eToys with 3.8 and are experiencing errors on every .pr file when 3.9 attempts to load.
We presumed upward migration and are unable, or unaware, of how to resolve.
Steve Linduska
On Jan 29, 2007, at 16:16 , Steve Linduska wrote:
I have students and teachers that have developed projects in eToys with 3.8 and are experiencing errors on every .pr file when 3.9 attempts to load.
We presumed upward migration and are unable, or unaware, of how to resolve.
You should stay with 3.8 for etoys projects. I am unaware of anyone trying to make 3.9 support this. There has even been talk of removing etoys in 3.10, because there are not enough community members interested in maintaining it.
We generally recommend to use the squeakland.org version for doing etoys, which is aimed at teachers and kids, rather than the squeak.org version, which is focused on Smalltalk developers.
- Bert -
I have a .pr file that only contains a couple of workspaces. In other words, it does not use eToys. It does not work in 3.9, either. The problem is that Morphic changed enough that 3.8 Morphs (and a workspace is a Morph) will not work in 3.9. My workspace has lots of colored text, so I can't just save it to a text file and read it back in again.
My guess is that this was not done on purpose, but it is still a pain in the neck.
-Ralph Johnson
On Jan 29, 2007, at 17:43 , Ralph Johnson wrote:
I have a .pr file that only contains a couple of workspaces. In other words, it does not use eToys.
Projects to me are a part of etoys.
It does not work in 3.9, either. The problem is that Morphic changed enough that 3.8 Morphs (and a workspace is a Morph) will not work in 3.9. My workspace has lots of colored text, so I can't just save it to a text file and read it back in again.
My guess is that this was not done on purpose, but it is still a pain in the neck.
I think there were reports that the major thing preventing project loading is the general class layout changes that were done to support traits. If it is just individual classes that changed, conversion methods can be provided that migrate instances on load.
- Bert -
El 1/29/07 1:43 PM, "Ralph Johnson" johnson@cs.uiuc.edu escribió:
I have a .pr file that only contains a couple of workspaces. In other words, it does not use eToys. It does not work in 3.9, either. The problem is that Morphic changed enough that 3.8 Morphs (and a workspace is a Morph) will not work in 3.9. My workspace has lots of colored text, so I can't just save it to a text file and read it back in again.
My guess is that this was not done on purpose, but it is still a pain in the neck.
-Ralph Johnson
The problems could be one or more classes what exists in old image and not in new. Sometimes references are created for classes what are not used in the project (example if you have Keymapping in old but not in new).
As long you have the same classes, projects loads fine. I wish know what problems you have. Could put your project in my ftp ? I guess also could load into 3.10 ...
Edgar
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Ralph,
would you have an example you could attach or make available somewhere? I know that Projects that contain eToys scripts do not load from 3.8 to 3.9. I also tested a few Projects without scripts, and they did work. That's not to say all do, so I'd like to look at an example.
Thanks Milan
On 2007 January 29 11:43, Ralph Johnson wrote:
I have a .pr file that only contains a couple of workspaces. In other words, it does not use eToys. It does not work in 3.9, either. The problem is that Morphic changed enough that 3.8 Morphs (and a workspace is a Morph) will not work in 3.9. My workspace has lots of colored text, so I can't just save it to a text file and read it back in again.
My guess is that this was not done on purpose, but it is still a pain in the neck.
-Ralph Johnson _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
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Bert Freudenberg -
Edgar J. De Cleene -
Milan Zimmermann -
Ralph Johnson -
Steve Linduska