My .Net version is v4.0.30319

I fired it up again now, and offc there are no error-reports from .net.

I only get an error in the Bitcoin Trader itself "error in processTicker:Input string was not in a correct format"

BTW: You should make space for seperate BUY/SELL order interfaces, I imagine that it might be very easy to make a sell instead of buy or vica versa. And possibly make their buttons seperate colors so that it's easy to tell which is which.

At the batch order, you could fill out the form, and then have "buy batch" and "sell batch" buttons underneath.