Comment 3 for bug 1046288

I ran gedit on MacOSx 10.6.8 and got similar error. There is no /usr/share/glib-2.0/schemas/ so I created it manually when setup the plugin and did:
        sudo cp *.gschema.xml /usr/share/glib-2.0/schemas/
        sudo glib-compile-schemas /usr/share/glib-2.0/schemas/

From console, the command "gsettings list-schemas" returns just "org.gnome.gedit.plugins.projects"

I tried to look into the config.py code and added a dialog to show schemas list before if self.settings_schema not in schemas:

It shows up below list without org.gnome.gedit.plugins.projects. But I don't know how to fix. That's weird because the command
"gsettings list-schemas" just returns "org.gnome.gedit.plugins.projects" while the python code returns a long list.

org.gnome.gedit.plugins.time, org.gnome.gedit.plugins.externaltools, org.gnome.gedit.preferences.print, org.gnome.gedit.preferences, ca.desrt.dconf-editor.Settings, org.gnome.desktop.default-applications, org.gnome.gedit.plugins, org.gnome.desktop.default-applications.office.calendar, org.gnome.desktop.media-handling, org.gnome.system.proxy.http, org.gnome.gedit.plugins.filebrowser, org.gnome.desktop.default-applications.terminal, org.gnome.system.proxy.socks, org.gnome.desktop.default-applications.office, org.gnome.desktop.a11y.magnifier, org.gnome.gedit.preferences.editor, org.gnome.system.locale, org.gnome.gedit.plugins.filebrowser.nautilus, org.gnome.desktop.screensaver, org.gnome.desktop.a11y.keyboard, org.gnome.system.proxy, org.gnome.gedit.state.history-entry, org.gnome.system.proxy.https, org.gnome.desktop.a11y.applications, org.gnome.gedit.plugins.checkupdate, org.gnome.gedit.plugins.drawspaces, org.gnome.gedit, org.gnome.desktop.default-applications.office.tasks, org.gnome.desktop.sound, org.gnome.desktop.session, org.gnome.desktop.thumbnail-cache, org.gnome.desktop.background, org.gnome.gedit.preferences.encodings, org.gnome.desktop.thumbnailers, org.gnome.system.proxy.ftp, org.gnome.gedit.plugins.pythonconsole, org.gnome.desktop.a11y.mouse, org.gnome.gedit.state.window, org.gnome.gedit.preferences.ui, org.gnome.gedit.state.file-filter, org.gnome.desktop.lockdown, org.gnome.desktop.interface, org.gnome.gedit.state