It happened again, this time with Lots=20. I'm pasting here the log (I just left in the log the initial start, and then the buys and the error, to avoid a massive logfile).

Click to reveal..
2017-11-30 11:24:00,234 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 11:24:00,234 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 11:24:01,310 INFO [default] {"success":true,"message":"","result":{"Bid":9970.00000000,"Ask":9980.79999999,"Last":9980.80000000}}
2017-11-30 11:24:01,310 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,310 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,310 INFO [default] BrokerAccount IN
2017-11-30 11:24:01,310 INFO [default] apisign: MYKEYS
2017-11-30 11:24:01,479 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04238690,"Available":0.04238690,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 11:24:01,479 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 11:24:01,479 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 11:24:01,504 INFO [default] {"success":true,"message":"","result":{"Bid":9970.00000000,"Ask":9980.79999999,"Last":9980.80000000}}
2017-11-30 11:24:01,504 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,504 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,504 INFO [default] BrokerAccount OUT
2017-11-30 11:24:01,504 INFO [default] BrokerLogin OUT
2017-11-30 11:24:01,504 INFO [default] BrokerTime IN
2017-11-30 11:24:01,504 INFO [default] BrokerTime OUT
2017-11-30 11:24:01,509 INFO [default] BrokerAccount IN
2017-11-30 11:24:01,509 INFO [default] apisign: MYKEYS
2017-11-30 11:24:01,509 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04238690,"Available":0.04238690,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 11:24:01,509 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 11:24:01,509 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 11:24:01,538 INFO [default] {"success":true,"message":"","result":{"Bid":9970.00000000,"Ask":9980.79999999,"Last":9980.80000000}}
2017-11-30 11:24:01,538 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,538 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 11:24:01,538 INFO [default] BrokerAccount OUT
2017-11-30 11:24:01,542 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:24:01,542 INFO [default] CanSubscribe IN
2017-11-30 11:24:01,568 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:24:01,772 INFO [default] Asset Details: BTC-ETH Price: 0.04396704 Spread: 0.00007604 MinAmount: 0.02278371 PipCost: 0.00000227
2017-11-30 11:24:01,772 INFO [default] BrokerAsset OUT
2017-11-30 11:24:01,773 INFO [default] BrokerHistory2 IN
2017-11-30 11:24:01,773 INFO [default] Params BTC-ETH Start : 11/02/17 10:24:01 End : 11/30/17 10:24:01 nTickMinutes : 5 nTicks : 300
2017-11-30 11:24:01,773 INFO [default] BrokerHistory3 IN
2017-11-30 11:24:01,975 INFO [default] return nTick: 28
2017-11-30 11:24:01,975 INFO [default] BrokerHistory3 OUT
2017-11-30 11:24:01,979 INFO [default] BrokerHistory2 IN
2017-11-30 11:24:01,979 INFO [default] Params BTC-ETH Start : 11/02/17 10:24:01 End : 11/03/17 00:00:00 nTickMinutes : 5 nTicks : 300
2017-11-30 11:24:01,979 INFO [default] BrokerHistory3 IN
2017-11-30 11:24:02,169 INFO [default] return nTick: 1
2017-11-30 11:24:02,169 INFO [default] BrokerHistory3 OUT
2017-11-30 11:24:02,174 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:24:02,367 INFO [default] Asset Details: BTC-ETH Price: 0.04396704 Spread: 0.00007604 MinAmount: 0.02278371 PipCost: 0.00000227
2017-11-30 11:24:02,367 INFO [default] BrokerAsset OUT
2017-11-30 11:24:02,437 INFO [default] BrokerTime IN
2017-11-30 11:24:02,437 INFO [default] BrokerTime OUT
2017-11-30 11:24:02,437 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:24:02,454 INFO [default] Asset Details: BTC-ETH Price: 0.04396704 Spread: 0.00007604
2017-11-30 11:24:02,454 INFO [default] BrokerAsset OUT
2017-11-30 11:24:02,454 INFO [default] BrokerAccount IN
2017-11-30 11:24:02,454 INFO [default] apisign: MYKEYS
2017-11-30 11:24:02,454 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04238690,"Available":0.04238690,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 11:24:02,454 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 11:24:02,454 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 11:24:02,471 INFO [default] {"success":true,"message":"","result":{"Bid":9970.00000000,"Ask":9980.79999999,"Last":9980.80000000}}
2017-11-30 11:24:02,471 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 11:24:02,471 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 11:24:02,471 INFO [default] BrokerAccount OUT
2017-11-30 11:24:02,745 INFO [default] BrokerTime IN

[...]

2017-11-30 11:30:49,425 INFO [default] Asset Details: BTC-ETH Price: 0.04395995 Spread: 0.00002599
2017-11-30 11:30:49,425 INFO [default] BrokerAsset OUT
2017-11-30 11:30:49,699 INFO [default] BrokerTime IN
2017-11-30 11:30:49,699 INFO [default] BrokerTime OUT
2017-11-30 11:30:49,699 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:30:49,886 INFO [default] Asset Details: BTC-ETH Price: 0.04400150 Spread: 0.00004155
2017-11-30 11:30:49,886 INFO [default] BrokerAsset OUT
2017-11-30 11:30:49,886 INFO [default] BrokerBuy IN
2017-11-30 11:30:49,886 INFO [default] BrokerBuy Params: BTC-ETH Amount:20 StopDist:0.00000000
2017-11-30 11:30:49,926 INFO [default] market=BTC-ETH&quantity=0.45567428&rate=0.04400175
2017-11-30 11:30:49,926 INFO [default] apisign: MYKEYS
2017-11-30 11:30:50,117 INFO [default] {"success":true,"message":"","result":{"uuid":"3e42e3cd-4201-4a55-bd1d-2c5c41ae9242"}}
2017-11-30 11:30:52,118 INFO [default] apisign: MYKEYS
2017-11-30 11:30:52,290 INFO [default] {"success":true,"message":"","result":{"AccountId":null,"OrderUuid":"3e42e3cd-4201-4a55-bd1d-2c5c41ae9242","Exchange":"BTC-ETH","Type":"LIMIT_BUY","Quantity":0.45567428,"QuantityRemaining":0.00000000,"Limit":0.04400175,"Reserved":0.02005046,"ReserveRemaining":0.02005041,"CommissionReserved":0.00005012,"CommissionReserveRemaining":0.00000000,"CommissionPaid":0.00005012,"Price":0.02005041,"PricePerUnit":0.04400162000000000000,"Opened":"2017-11-30T10:30:51.647","Closed":"2017-11-30T10:30:52.677","IsOpen":false,"Sentinel":"14f8186b-b9ac-49d9-ac84-caea192f47cf","CancelInitiated":false,"ImmediateOrCancel":false,"IsConditional":false,"Condition":"NONE","ConditionTarget":null}}
2017-11-30 11:30:52,290 INFO [default] Trade id: 3e42e3cd-4201-4a55-bd1d-2c5c41ae9242 - 1512037849 - Price: 0.04400175
2017-11-30 11:30:52,291 INFO [default] Type: buy Price: 0.04400175 Amount: 0.45567428
2017-11-30 11:30:52,293 INFO [default] Quantity: 0.45567427999999999 QRemaining: 0 Commission: 0.00005013
2017-11-30 11:30:52,293 INFO [default] BrokerBuy OUT
2017-11-30 11:30:52,295 INFO [default] BrokerAccount IN
2017-11-30 11:30:52,296 INFO [default] apisign: MYKEYS
2017-11-30 11:30:52,550 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.02228637,"Available":0.02228637,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 11:30:52,550 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 11:30:52,550 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 11:30:52,577 INFO [default] {"success":true,"message":"","result":{"Bid":9800.00000000,"Ask":9800.04999998,"Last":9800.00000000}}
2017-11-30 11:30:52,577 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 11:30:52,577 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 11:30:52,577 INFO [default] BrokerAccount OUT
2017-11-30 11:30:52,852 INFO [default] BrokerTime IN
2017-11-30 11:30:52,852 INFO [default] BrokerTime OUT
2017-11-30 11:30:52,852 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:30:52,876 INFO [default] Asset Details: BTC-ETH Price: 0.04400176 Spread: 0.00000001
2017-11-30 11:30:52,876 INFO [default] BrokerAsset OUT
2017-11-30 11:30:53,150 INFO [default] BrokerTime IN
2017-11-30 11:30:53,150 INFO [default] BrokerTime OUT
2017-11-30 11:30:53,150 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 11:30:53,177 INFO [default] Asset Details: BTC-ETH Price: 0.04400176 Spread: 0.00000001
2017-11-30 11:30:53,177 INFO [default] BrokerAsset OUT
2017-11-30 11:30:53,451 INFO [default] BrokerTime IN
2017-11-30 11:30:53,451 INFO [default] BrokerTime OUT

[...]

2017-11-30 12:00:00,870 INFO [default] Asset Details: BTC-ETH Price: 0.04425000 Spread: 0.00010000
2017-11-30 12:00:00,870 INFO [default] BrokerAsset OUT
2017-11-30 12:00:01,144 INFO [default] BrokerTime IN
2017-11-30 12:00:01,144 INFO [default] BrokerTime OUT
2017-11-30 12:00:01,144 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:01,177 INFO [default] Asset Details: BTC-ETH Price: 0.04425000 Spread: 0.00010000 MinAmount: 0.02278371 PipCost: 0.00000215
2017-11-30 12:00:01,177 INFO [default] BrokerAsset OUT
2017-11-30 12:00:01,180 INFO [default] BrokerBuy IN
2017-11-30 12:00:01,180 INFO [default] BrokerBuy Params: BTC-ETH Amount:-20 StopDist:-1.00000000
2017-11-30 12:00:01,215 INFO [default] market=BTC-ETH&quantity=0.45567428&rate=0.04415000
2017-11-30 12:00:01,215 INFO [default] apisign: MYKEYS
2017-11-30 12:00:01,408 INFO [default] {"success":true,"message":"","result":{"uuid":"0ee0d20c-7a32-4718-ad68-c49765e4aade"}}
2017-11-30 12:00:03,409 INFO [default] apisign: MYKEYS
2017-11-30 12:00:03,568 INFO [default] {"success":true,"message":"","result":{"AccountId":null,"OrderUuid":"0ee0d20c-7a32-4718-ad68-c49765e4aade","Exchange":"BTC-ETH","Type":"LIMIT_SELL","Quantity":0.45567428,"QuantityRemaining":0.00000000,"Limit":0.04415000,"Reserved":0.45567428,"ReserveRemaining":0.45567428,"CommissionReserved":0.00000000,"CommissionReserveRemaining":0.00000000,"CommissionPaid":0.00005029,"Price":0.02011801,"PricePerUnit":0.04414997000000000000,"Opened":"2017-11-30T11:00:02.973","Closed":"2017-11-30T11:00:04.57","IsOpen":false,"Sentinel":"66e0cd06-9f91-499e-9886-4e06e67036c7","CancelInitiated":false,"ImmediateOrCancel":false,"IsConditional":false,"Condition":"NONE","ConditionTarget":null}}
2017-11-30 12:00:03,568 INFO [default] Trade id: 0ee0d20c-7a32-4718-ad68-c49765e4aade - 1512039601 - Price: 0.04415000
2017-11-30 12:00:03,569 INFO [default] Type: sell Price: 0.04415000 Amount: 0.45567428
2017-11-30 12:00:03,570 INFO [default] Quantity: 0.45567427999999999 QRemaining: 0 Commission: 0.00005030
2017-11-30 12:00:03,571 INFO [default] BrokerBuy OUT
2017-11-30 12:00:03,573 INFO [default] BrokerAccount IN
2017-11-30 12:00:03,573 INFO [default] apisign: MYKEYS
2017-11-30 12:00:03,739 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04235409,"Available":0.04235409,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 12:00:03,739 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 12:00:03,739 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 12:00:03,763 INFO [default] {"success":true,"message":"","result":{"Bid":9501.00000001,"Ask":9501.58880834,"Last":9501.00000000}}
2017-11-30 12:00:03,763 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 12:00:03,763 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 12:00:03,763 INFO [default] BrokerAccount OUT
2017-11-30 12:00:03,764 INFO [default] BrokerTime IN
2017-11-30 12:00:03,764 INFO [default] BrokerTime OUT
2017-11-30 12:00:03,764 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:03,951 INFO [default] Asset Details: BTC-ETH Price: 0.04425000 Spread: 0.00010000
2017-11-30 12:00:03,951 INFO [default] BrokerAsset OUT
2017-11-30 12:00:03,952 INFO [default] BrokerAccount IN
2017-11-30 12:00:03,952 INFO [default] apisign: MYKEYS
2017-11-30 12:00:03,952 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04235409,"Available":0.04235409,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 12:00:03,952 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 12:00:03,952 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 12:00:03,973 INFO [default] {"success":true,"message":"","result":{"Bid":9501.00000001,"Ask":9501.58880834,"Last":9501.00000000}}
2017-11-30 12:00:03,973 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 12:00:03,973 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 12:00:03,973 INFO [default] BrokerAccount OUT
2017-11-30 12:00:04,247 INFO [default] BrokerTime IN
2017-11-30 12:00:04,247 INFO [default] BrokerTime OUT
2017-11-30 12:00:04,247 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:04,263 INFO [default] Asset Details: BTC-ETH Price: 0.04425000 Spread: 0.00010000
2017-11-30 12:00:04,263 INFO [default] BrokerAsset OUT

[...]

2017-11-30 12:00:33,396 INFO [default] Asset Details: BTC-ETH Price: 0.04425000 Spread: 0.00010000
2017-11-30 12:00:33,396 INFO [default] BrokerAsset OUT
2017-11-30 12:00:33,671 INFO [default] BrokerTime IN
2017-11-30 12:00:33,671 INFO [default] BrokerTime OUT
2017-11-30 12:00:33,671 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:33,849 INFO [default] Asset Details: BTC-ETH Price: 0.04421666 Spread: 0.00006666
2017-11-30 12:00:33,849 INFO [default] BrokerAsset OUT
2017-11-30 12:00:33,850 INFO [default] BrokerBuy IN
2017-11-30 12:00:33,850 INFO [default] BrokerBuy Params: BTC-ETH Amount:-20 StopDist:0.00000000
2017-11-30 12:00:33,885 INFO [default] market=BTC-ETH&quantity=0.45567428&rate=0.04413660
2017-11-30 12:00:33,886 INFO [default] apisign: MYKEYS
2017-11-30 12:00:34,053 INFO [default] {"success":false,"message":"INSUFFICIENT_FUNDS","result":null}
2017-11-30 12:00:34,053 ERROR [default] INSUFFICIENT_FUNDS
2017-11-30 12:00:34,055 ERROR [default] market/selllimit
2017-11-30 12:00:34,055 ERROR [default] market=BTC-ETH&quantity=0.45567428&rate=0.04413660
2017-11-30 12:00:34,055 ERROR [default] market/selllimit - Error Parsing JSon
2017-11-30 12:00:34,056 ERROR [default] Error calling API BrokerBuy
2017-11-30 12:00:34,057 INFO [default] BrokerBuy OUT
2017-11-30 12:00:34,058 INFO [default] BrokerAccount IN
2017-11-30 12:00:34,058 INFO [default] apisign: MYKEYS
2017-11-30 12:00:34,232 INFO [default] {"success":true,"message":"","result":{"Currency":"BTC","Balance":0.04235409,"Available":0.04235409,"Pending":0.00000000,"CryptoAddress":null}}
2017-11-30 12:00:34,232 INFO [default] CallGetAccBaseCurrExchRate IN
2017-11-30 12:00:34,232 INFO [default] GetAccBaseCurrExchRate IN Symbol: USDT-BTC
2017-11-30 12:00:34,315 INFO [default] {"success":true,"message":"","result":{"Bid":9501.00000000,"Ask":9501.58880831,"Last":9501.00000000}}
2017-11-30 12:00:34,315 INFO [default] GetAccBaseCurrExchRate OUT
2017-11-30 12:00:34,315 INFO [default] CallGetAccBaseCurrExchRate OUT
2017-11-30 12:00:34,315 INFO [default] BrokerAccount OUT
2017-11-30 12:00:34,590 INFO [default] BrokerTime IN
2017-11-30 12:00:34,590 INFO [default] BrokerTime OUT
2017-11-30 12:00:34,590 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:34,797 INFO [default] Asset Details: BTC-ETH Price: 0.04421666 Spread: 0.00006666
2017-11-30 12:00:34,797 INFO [default] BrokerAsset OUT
2017-11-30 12:00:35,071 INFO [default] BrokerTime IN
2017-11-30 12:00:35,071 INFO [default] BrokerTime OUT
2017-11-30 12:00:35,071 INFO [default] BrokerAsset IN Symbol: ETH/BTC
2017-11-30 12:00:35,099 INFO [default] Asset Details: BTC-ETH Price: 0.04421666 Spread: 0.00006666