We have discovered a bug in Zenphoto version 1.4.2 which leaves the default for publishing new images and albums set to not publish them. This is corrected in the nightly builds and in the upcoming 220.127.116.11 release.
However, the nature of the bug is such that the error cannot automatically be reversed. The option must be manually changed on the gallery options tab if you do not want unpublished as the default.
Instead we have revived the publish content utility obsoleted by the bulk action implementations on albums and images. You can use this utility to locate any accidentally not published albums and images.
You can find this plugin here. Note that the plugin is "unsupported" which means that we may not extend it to deal with Zenpage content.