In the Squeak4.2-10950.image, at the end of the "How to extend the
Image" window, there is a line of code: (Smalltalk at: #PRDistribution)
This returns errors due to the fact that PRAjaxSearchWidget is not in
the package Pier-Seaside-Widgets specified by the ConfigurationOfPier2
and in fact, it isn't included in any version after
If I drop back to that version, I can register a new Pier kernel via
PRDistribution, but otherwise, not.