These are errors that can occur when moving between different versions, that aren't specific to any version:
unable to export AnObsoletePRKernelSettings
This can happen due to a widget that is part of Pier, but the underlying class is not loaded. For example, if the book distribution is used (PRBookDistribution), but the Pier-Book config is not loaded, then classes like BONoteWidget and BOPortion will not be loaded. Loading the missing config resolves it, however it is not always easy to find what is missing.
PRKernel instances size = 1. "Check that there is only one. Next inspect the below:" (PRPathLookup start: PRKernel instances any root path: '/system/components/defaultCss') file location "This should show an inspector with the path from files/<first>/<second> - Create that path and upload the missing style.css to the server."
To resolve the problem, it is likely to require re-starting the image to have the file read.
(self asSortedCollection: [ :a :b | a name < b name ]) do: [ :user | Transcript cr; show: user name; space; show: (user instVarAt: 4) hash ]