When editing an article, I tried to insert an image… This fails like this…
Warning: require_once(File.php) [function.require-once]: failed to open stream: No such file or directory in /var/www/campsite/html/admin-files/localizer/Localizer.php on line 12
Fatal error: require_once() [function.require]: Failed opening required 'File.php' (include_path='CS_PATH_PEAR_LOCAL:.:/usr/share/php:/usr/share/pear') in /var/www/campsite/html/admin-files/localizer/Localizer.php on line 12
Apparently the php files are not being found because the constants were not defined when the php path was set up: so CS_PATH_PEAR_LOCAL did not get properly expanded to its value like it should have.
My workaround (but this may not be correct if the conf/configuration.php file is auto-generated during setup) was to add a line