Gnome 3 Problem

[余访文]

Hi,

After I installed the "GNOME Software Development" group with yum, I
couldn,t log into the Gnome desktop. An error message says "Oh no! Something
has gone wrong.
A problem has occurred and the system can't recover. Please log out and try
again", and it repeated every time I tried to log in. I created a file
"gnome-shell.desktop"
in the ~/.config/autostart directory, the error message no longer appears,
but I get only a wallpaper which means no top bar or else. The file's
content is as follows:


[Desktop Entry]
Type=Application
Exec=gnome-shell --replace
Hidden=false
NoDisplay=false
X-GNOME-Autostart-enabled=true
Name[en_US]=Gnome Shell
Name=Gnome Shell
Comment[en_US]=
Comment=

Doesn't anyone have an idea how to fix the problem? I would appreciate any
help.