Estimated Printing Time has negative value
I have a question. I am slicing http://www.thingiverse.com/thing:18365/#files (dragonSpikeHigh1) using Slic3r in Repetier host 1.6.2.
After slicing I am seeing an Estimated print time of -8s.
I have see this a few times with some one layer calibration STL files but never with a big model. Is there something I should dbe looking at ?