Black areas showing up in 2017 Layout viewport

[MJB]

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Problem! Black points show in Layout using Raster

Morning! I have a problem with layout. I made a design in Sketchup and used Tech Pen Blue as style. Now when I open this drawing in Layout and the frame is set to Raster, I get these weird black points, they almost looks like end points which they are not. Using Vector and Hybrid makes them disappear. but that’s not the look im going for. Printing the image in Layout shows these black points, using layout’s export feature does and also when I export directly to 2D in Sketchup does too. Also in …