redefining a prototype derived from Association

[Daniel John Crowe]

Hi,

When I do the following:
addPrototype: #foo derivedFrom: { Association }.
addPrototype: #foo derivedFrom: { Association }.

I get an MNF on the second line for a missing selector #key, on a Cloneable object.  (Sorry I can't get a paste of this for you)

However, the code works ok for:
addPrototype: #foo.
addPrototype: #foo.

I'm not sure which build I'm using, I think it is post 0.3.2.

Thanks,
  Daniel Crowe