All layers are same color in layer height view.. I've uploaded the latest gcode for the cylinder... error occurred twice at layer 129, and again at 156. Give or take a layer or two, this was the layer currently displayed on the web interface at the time of the error. Maybe this will help narrow it down..
https://www.dropbox.com/s/ietjnm8mnlbussy/430mm cylinder R2.gcode?dl=0