Morph Window -> Class? (was: [Newbies] error loading .pr

Bert Freudenberg bert at
Tue Apr 3 11:44:16 UTC 2007

On Apr 3, 2007, at 11:25 , Edgar J. De Cleene wrote:

> El 4/3/07 5:08 AM, "Herbert König" <herbertkoenig at> escribió:
>> Be aware that imho 3.8 and earlier projects don't load into 3.9.  
>> But I
>> guess projects will be continued, at least in the squeakland image,
>> for very long.
> You and Góran are wrong.
> Some 3.7 and 3.8 projects loads into 3.9 (and 3.10 also)
> Those what don't load , if you take time could find what change  
> between
> versions and do what load again.
> I resurrect MorphicWrappers and MathMorphs from as old as 2.1 !! (some
> parts) and success to load Fabrik from last images what have it  
> into 3.10.
> My plans is when we reach 3.10beta is rip the Etoys and Nebraska  
> from 3.10
> for have proper .mcz what loads again, and possible do a  
> "compatibility
> guesser" what could load older things.
> At this time 3.10 have problems with Etoys .pr from earlier versions.

Edgar is right about that one - when loading a .pr in a newer image  
you can do all sorts of adjustments to make it work. This works in  
the Squeakland line of images for example - but it takes dedicated  
efforts to ensure loadability.

- Bert -

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