I run Xfce4.6.1 under Zenwalk. This morning wanted to install Gnome so ran the appropriate tool to install the required packages.
Logout, change session, login = there is a problem so decided to return to Xfce to make some checks
Ctrl-Alt-BkSpace, change sessione, login. Everything was OK but on the panel only one of my launchers is still there.
In ~/.config/xfce4/panel all launchers are present so decided to reinstall my tools with Add New Items -> Launcher but what I get is
Could not open "launcher" module