The Spreadcoin wallet is pretty unstable. That's why I'm not keeping my SPR on there until they say we need to. It is safer on an excahange. My wallet went on a fork the first time I DL it. The dev said delete every file and reinstall was the only option. Since I hadn't backed it up yet, I would have lost all my SPR if I had already sent it.
So try to avoid using the SPR wallet.
if bittrex agrees to help with the adding of helium based on snapshot from SPR, it would be the best solution. moving your coins around is always risky