First of all you need to turn on hidden files and folders.
XP:
My Computer
'Tools'
'Folder Options'.
The go to the 'View' tab and select 'Show hidden files and folders'
Windows Vista and Windows 7:
My Computer
'Organize'
'Folder and Search Options'.
The go to the 'View' tab and select 'Show hidden files and folders'
Once this is done, follow the instructions below:
Windows XP:
1. Open “My Computer”
2. Navigate to : “Documents and Settings\\Application Data\
3. Go into the “Sports Interactive” Folder.
4. Go to the “Football Manager 2012” Folder.
5. Delete the 'cache' Folder found inside here.
Windows Vista and Windows 7:
1. Click “Start”
2. Click your username on the start Menu
3. Click on “AppData” and then “Roaming”
4. Go into the “Sports Interactive” Folder
5. Go to the “Football Manager 2012” Folder.
6. Delete the 'cache' Folder found inside here.