Note that "-eres 0" will work for two more epochs only, so you will see the same problem in a week or two.
I prepare new version, it uses a bit less GPU memory so it will add a couple of weeks too. Anyway, for cards with 4GB or less it's a good idea to check other solutions like installing more physical RAM (if it helps) or changing OS to Windows 7 or Linux.
DAG size for ETH is 2.8 GB why is this an issue?