Saved Game error

Hi I have only just bought this game ,

What has happened is that i saved my game with 67k as i couldnt remember the full objective and there was no icon at the top of the screen to tell me the objective.

When I reloaded the saved game my money had dropped down to 7k and there was an error messagesaying that i should not load a old version saved game —Hmmm

I only have one version - has anyone eles had this problem

hi, is this a store-bought copy?