yeah we have to have solve this somehow, it is a side-effect of the new 
class-builder
which actually properly validates the layouts of classes.

If you modify classes with monticello they might end up in an invalid state for 
a short
period. Previously this went undetected, the SlotClassBuilder is very picky 
about this :(.

Maybe an intermediate solution for this is to disable any kind of validation 
while we
load stuff with Monticello...

On 2013-09-11, at 15:13, kilon <theki...@yahoo.co.uk> wrote:

> IcompatibleLayoutConflict: Class with PointerLayout cannot be extended as
> byte
> 
> is the error i am getting using the very latest pharo 3.0 image while trying
> to load NBOpengl
> 
> (ConfigurationOfNBOpenGL project version: '2.0') load.
> 
> here is the full trace
> 
> http://pastebin.com/an4KFVrH
> 
> I get the same error in macos and ubuntu, I suspect windoom is same too. 
> 
> 
> 
> 
> --
> View this message in context: 
> http://forum.world.st/NBOpengl-Error-IcompatibleLayoutConflict-tp4707721.html
> Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
> 

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