I'm sorry to say (May not be completely right) - because I did my research a while ago but 12 usually means UR save file is .bad (it should say that in the saves) anyway u need tonstart a new game becuase u will not Be able to save it again. MY TIP: to only ever use save as. For example I started a game and gave it a nickname 'first' because it was my first game on my new computer but anyway since then I'm just above 'first 200' and I'm still playing - (also use nickname like rabbit or something, doesn't really matter u just delete the number and rewrite it- up to u) also I'm pretty sure this helps - but then again I did get a new computer -still though an error is an error and only saving as helps for me
ok bye (reply if helped)- also not a specialist so sorry if it didn't