Hiya Col,
Had a great time thanks... its just never long enough! Well I see where the problem was, theres seems to be a bug where if you have a long and short position open and then close or cover it affects the other position, normally by fleecing you of all your cash. I'll work to get it fixed asap, in the meantime its probably a good idea not to be both long and short in a stock. Will try and fix your entry tonight, otherwise by the end of play tomorrow.
Cheers,
Paul.