Okie, I solved this problem. This error occur when old paths to picture folders were not still exist.
Press Ctrl+2 and enter "gconf-editor", go to apps -> wp_tray. On the right panel, right click on dir_list, choose Edit Keys and delete all values inside. Now, return to panel and add it again. Hope it is useful for you. -- wallpaper tray applet will not load https://bugs.launchpad.net/bugs/368421 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs