Same for me, I can log in to btcchina with QT Trader and I get my stats and current balances but when I try to sell, nothing happens, no orders are put up. It works fine with Mtgox for me though.
I wonder if it's because I have 2 factor authentication on my btcchina account? hm..
I'm currently debugging it. Soon I'll release update with fixes.
Yeah, having used the MtGox functionality I assumed it all worked. Tried selling so many times with QT BTCChina without success that it locked my account. No trading / withdrawal / anything for 8 hours until support wakes up and there's a dip coming.
Woo.