Help!

hello everybody I play football manager 2011 and I had the sickest save but suddenly one day i tried to start the game and then stood there'' not well-formed (invalid token) at line 1 load saved Game.xml. '' also it said''the game could not be retrieved''what am I doing and what has happened??? please answer me

sometimes happens, ok go to

control panel then
appearence and Personalization
folder options
hidden files and folders
click on the 'show hidden files folders and drives'

then click on my computer
windows (c drive)
users
(your name)
app data
roaming
sports interactive
football manager 2011
and delete the settings folder

and then try it