Yes, that seems to be a nasty bug. It is currently under investigation ;) On 2013-11-22, at 16:53, Torsten Bergmann <astares@gmx.de> wrote:

We can mark methods with pragmas - but there is no way for classes.

Adding a new instance variable "annotations" to ClassDescription in Pharo 30#30590 leads to an error "Should not happen" (in Slots code).

Any help appreciated...

Thx T.