I have the same problem. This might be a simpler explanation of the solution:
1. Press ALT+F2 (to bring up the "Run a command" dialog) 2. Type killall indicator-datetime-preferences and press Enter 3. Try to open Time & Date Settings again
I have the same problem. This might be a simpler explanation of the solution:
1. Press ALT+F2 (to bring up the "Run a command" dialog) datetime- preferences and press Enter
2. Type killall indicator-
3. Try to open Time & Date Settings again