radiotray on xfce: no menus, no icon. Unusable

[David Anderson]

With xfce and Thunar radio tray is not usable. It does not show up in any panel so there is no way
to access its menus. According to its log ~/.locale/share/radiotray/radiotray.log
it starts fine. And ps -eaf shows itlive.
But without a way to access the menus it cannot work.
This on a machine converted from gnome to xfce and on another
with xubuntu installed from the beginning.

On 14.04 running gnome ( using metacity
 not unity), on the other hand, the radiotray icon
shows up and it all works properly.

Nothing I can find mentions any special actions to make radiotray
work on xfce...

======log entries, latest radiotray startup: (~/.local/share/radiotray/radiotray.log)

2015-07-29 18:50:46,586 - DEBUG - Loading configuration...
2015-07-29 18:50:46,586 - INFO - Starting Radio Tray...
2015-07-29 18:50:46,586 - INFO - Loading bookmarks file: /home/davea/.local/share/radiotray/bookmarks.xml
2015-07-29 18:50:46,586 - DEBUG - Bookmarks file loaded with success
2015-07-29 18:50:46,587 - DEBUG - PLS playlist decoder
2015-07-29 18:50:46,587 - DEBUG - M3U playlist decoder
2015-07-29 18:50:46,587 - DEBUG - ASX-familiy playlist decoder
2015-07-29 18:50:46,587 - DEBUG - XSPF playlist decoder
2015-07-29 18:50:46,587 - DEBUG - Initializing ASF playlist decoder
2015-07-29 18:50:46,587 - DEBUG - RAM playlist decoder
2015-07-29 18:50:46,587 - INFO - Using url timeout = 100
2015-07-29 18:50:46,592 - DEBUG - App Indicator selected
2015-07-29 18:50:46,605 - INFO - finding plugins in user plugin path
2015-07-29 18:50:46,605 - INFO - finding plugins in system plugin path
2015-07-29 18:50:46,605 - DEBUG - /usr/share/radiotray/plugins/matemediakeys.plugin
2015-07-29 18:50:46,605 - DEBUG - /usr/share/radiotray/plugins/helloworld.plugin
2015-07-29 18:50:46,606 - DEBUG - /usr/share/radiotray/plugins/notification.plugin
2015-07-29 18:50:46,606 - DEBUG - /usr/share/radiotray/plugins/sleeptimer.plugin
2015-07-29 18:50:46,606 - DEBUG - /usr/share/radiotray/plugins/history.plugin
2015-07-29 18:50:46,606 - DEBUG - /usr/share/radiotray/plugins/gnomemediakeys.plugin

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: radiotray 0.7.3-1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-59.98-generic 3.13.11-ckt22
Uname: Linux 3.13.0-59-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: i386
CurrentDesktop: XFCE
Date: Wed Jul 29 19:00:46 2015
PackageArchitecture: all
SourcePackage: radiotray
UpgradeStatus: Upgraded to trusty on 2014-07-21 (373 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.