run parallel in sge server and get error in specific situation

[desnar]

Hi,
I run the bpipe (b10685f, current master) with follow script and get wrong in my sge server.

DemoScript:

b = {}
c = {
def t=["a":["1.fq"]]
run {t*[cc]}
}
cc = {}
a = segment{b+c}
run{a}

ErrorInfo:

When I run this script in non-sge server or I change the segment part like

a = segment{c} // remove b

or

def t=["a":["1.fq"]]
a = segment{t*[cc]} //call parallel in segment directly

the sge server run well.