[Mediawiki-l] Special:allmessages help

[Nancy Dailey]

Upon upgrading to version 1.10.1, the Special:allmessages page recognizes only some of the local changes I have made. It will not allow me to edit any text in any pages. Many of the pages are empty. For example, Mediawiki:viewsource is not populated with View source. If I try to add text to change the label to "wikitext," upon saving, it ignores the change and reverts back to an empty page. 

Does version 1.10.1 not allow for changes in Special:allmessages? If it does, is there something I needed to do in the upgrade to toggle this function? Thanks for any help.
Nancy