On Tue, 29 Nov 2011, Jon Hylands wrote:
If you pull a virgin 4.2 All-in-one image off squeak.org, you'll see that that method does not exist anywhere in the image, so it obviously came from some other package...
It was introduced in Squeak 4.3, see http://lists.squeakfoundation.org/pipermail/squeak-dev/2011-March/157820.htm...