The errors come and go.  Sometimes I restart Gunbot, and sometimes this helps.  Usually its just Poloniex API being flakey. Its been really bad for the past few days, and was down almost a full day about 1 day after the bitcoin fork. I heard it was because of electrical storms back east, but that's only a rumor.  I think (but am not certain) that poloniex servers are in/near silicon valley.