I get now often Zombies.
..................
The first lines already says the problem. The GUI, however, says:
Market Limitations:
Min. PX Unit: 0.00000001
Min. QTY Unit: 0.0005
Min. TOT Order: 0.00000001
I tried Sell 4.53920997 WC at 0.00007028 = total 0.00031901
Yep...
Cryptopia changed minimum trade limits to 0.0005 BTC / 0.01 LTC / 10 DOGE / 1 USDT / 1 NZDT (depending on base market)