Does anyone have any idea what these alien objects are that are turning up in my layout file.
they are not in the sketchy up. the same marks appear on different pages that have different page references. I work with Sketchup pro 2018 and have a MacBook Pro 2019 2.3 GHz 8-Core Intel Core i9. 16 GB 2400 MHz DDR4 - graphics Radeon Pro 560X 4 GB
Intel UHD Graphics 630 1536 MB