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

[goran at krampe.se]

Hi!

Bert Freudenberg <bert at freudenbergs.de> wrote:
> On Apr 3, 2007, at 11:25 , Edgar J. De Cleene wrote:
> 
> > El 4/3/07 5:08 AM, "Herbert König" <herbertkoenig at gmx.net> 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.

Ok, perhaps I should have expressed myself a bit clearer - I wrote "not
inherently backwards compatible" which still is true IMHO - and
especially the other way around (loading say a 3.8 IS into a 3.7 image).

And I said "For example, loading projects from 3.7 into 3.8 causes
problems (due to the new wide String
stuff).". That was not correctly expressed. First of all I meant the
other way around and secondly I agree that it doesn't HAVE to fail.

regards, Göran