Marcus Denker wrote:

Yes, this is why

https://pharo.fogbugz.com/f/cases/13606/testSlotScopeParallelism-is-failing

is faling, too.

There is a root cause for this that in some cases when changing classes that the layout gets not updated correctly...
  

not sure its the same problem.  That one seems introduced in build 40003 - unless it was fixed and broke again later.
cheers -ben

On 21 Sep 2014, at 03:42, Ben Coman <btc@openInWorld.com> wrote:

  

In build 40239, if I try to add an instance variable (e.g. 'xx') to AbstractNautilusUI, I get "Error: should not happen" from LayoutEmptyScope(LayoutAbstractScope)>>rebase:to: A tried a few other classes and they are okay. I've tracked this down to occur since build 40147 [edit, 40127 not 40147]...

13697 Yet another cleanup of MessageBrowser API
  https://pharo.fogbugz.com/f/cases/13697

13698 Small cleanup of Model and the UI package
  https://pharo.fogbugz.com/f/cases/13698

13696 Nautilus Refactoring 1: Classlist widget
  https://pharo.fogbugz.com/f/cases/13696

Is this a known problem? I can't identify a ticket on the tracker.

cheers -ben