help me please e:error executing updater binary in zip

I have problem. when i install rom with safestrap. it's show "e:error executing updater binary in zip."
I use safestrap 3.75 and My device is XT910 umts_spyder. I install cm11 umts_spyder 20150901 it's error say "e:error executing updater binary in zip" help me pls