[Mashiro]

@youssefbasha

1. Right click into the empty panel and select the "Add New Items..." item.
2. In the new window select "Application Menu" and click on the "Add" button at the bottom.
3. You will see that there is now a application menu available in the panel with the XFCE mouse icon. Click on it and select "Terminal Emulator" to start a terminal.
4. In that terminal enter "xfce4-panel --quit" to stop the XFCE 4 panel process.
5. Stop the XFCE 4 configuration service with the command "pkill xfconfd".
6. Delete your current XFCE 4 configuration with the command "rm -rf ~/.config/xfce4/panel".
7. Delete settings for the XFCE 4 configuration service with the command "rm -rf ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml".
8. Start the XFCE 4 panel again with the command "xfce4-panel".

The configuration prompt will popup again. Click on the button with "default config". You're done. You can close the terminal. It will warn you about a running process. Ignore the warning. the XFC4 panel will be killed shorty and will respawn again.