Slicer reports 1000s of errors not seen in Cura; Render is missing big chunks Brand new to Slic3r, I've been using Cura for a while, so not sure is happening.  I tried to load this Knight model into Slic3er (v1.2.9 running on OS X), and it's reporting "Manifold: auto-repaired (11430 errors)", and the model looks incomplete.  Hovering the model with the mouse shows more details:



Preview mode shows supports holding up the head, so I don't think it's just a screen rendering issue.  But I loaded this same model into Cura earlier today, and it worked just fine; I've printed the resulting GCode.  So I believe the model is fine.  I wanted to print using Slic3r and compare the results. 

Is this a known issue with certain types of models?  Not sure what to try next.
Cura and Slic3r are very different programs. You will not get the exact same print between the two. I find that of late slic3r will try to fill holes when older versions do not. So even versions will not behave the same. I will say I have less issues with simplify 3d, but the price is very high.

Following. When this happens I attempt to repair the model. There is obviously some unresolved issues in the model. I use Netfabb which has been exported to this online tool.

Really though. I would ask for my money back ;-)