Have you had developper active lately, if so you might have set and saved the draw on terrein and draw on shapes off, if you select these than you should be fine.
Go to developper mode in the options screen and set it to on, and press F11
Now if you go with the mouse top the left edge of the screen you see roll bars
Select option now go through these options and seek the two i mentioned in the top of this reply, Ian see if they are checked. If not check them on.
This might do the trick.
Blue skies to you