I noticed that sometimes the "Cog Wheel" - Options button (I do not know if it is the proper translation from French) at the most up-right corner disappears in nautilus (see attached image) Without Option button :
With Option button :
I tried to stop and restart Nautilus via the "nautilus -q && nautilus &" command found in the following How to restart nautilus without logging out but this DOES NOT make the Options button re-appear.
In the contrary it gives me the following error message :
nautilus -q && nautilus & 1 4700 laurent06000@PC-DE-LDP:~$ Impossible d'enregistrer l'application: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
Which can be translated to "Impossible to register the application : ..."
The only workaround I found is to restart ubuntu which is not an acceptable solution (even closing and opening the session doesn't solve this problem).
Any help would be greatly appreciated.
[Edit 1] : I confirm that after a crash of Nautilus I do not see the Option Button anymore as described above and I have to restart .
And when I issue the command "nautilus -q && nautilus" I still receive the message
laurent06000@PC-DE-LDP:~$ nautilus -q && nautilus
Impossible d'enregistrer l'application:
GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
[Edit 2] : after all latest updates applied I now DO NOT have the Options Button in Nautilus even after a Ubuntu restarted from fresh.
This is REALLY annoying because this button allows for example to automatically select files from formating rules (+ invert the selection) and many other power full options).
Any idea ?
The problem re-occurs after latest Ubuntu updates and restart (on August 6th 2015)