hi,

I am working on the prefs tool for my gnome-shell extension (put window),
The user is able to store application based config in the settings schema. After saving the chances i show a gtk.messagebox. 

At this point the whole shell freezes (sometimes) and must be restart from tty1 by killing the old shell and start a new one. (gnome-shell --replace doesn't work).


Today i found a interesing log message on my tty.
   JS Error: must pass a single parameter to log

the error occures inside a catch-block in modules/overrides/Gio.js#_propertySetter (around line 150)

http://git.gnome.org/browse/gjs/tree/modules/overrides/Gio.js?id=96977af3512f9af7a778230a632e847c83b10679

Line #153 should be
    this.g_object_path + '. Error is ' + e.message);
but is
    this.g_object_path, '. Error is ' + e.message);

Looks like this bug exists in all branches on git.gnome.org. 

cheers