Guys,
I recently ran into a situation where OwnCloud complained that I lacked a 'system tray' - and the only way to fix it was to reinstall the XFCE tray (which is completely different than the base Sparky Linux look (now it's on the top, and a bar on the bottom - no recently used list... etc).
I liked the simplicity of the Sparky base XFCE load. Any ideas on how to fix?
I simply reinstalled the panel, then unlocked it from the top position, moved to the bottom.
Got rid of the application pick, and replaced it with 'whisker'. Moved the mini-panel from the bottom (centered), to the top right (after an 'unlock').
D'oh... finished.
p.s. - tried to copy my .config/xfce files from a working laptop - that did not make any difference.