Good point with the file size. It is WAY too small (3.5kb). Something screwy is happening during the export. I have been selecting the STEP option in export, but it saves as a .stp. I manually added the e and it didn’t make a difference. So I switched to “Save As” instead of export and it comes up asking what I want to convert and has a variety of options. But the file size is still too small and solidworks gives the same error.
I really hate the stl file type. The only program that actually works good with it is TinkerCad, but you can’t do assemblies and stuff in it. Plus as someone that knows Solidworks, Inventor, AutoCAD, and Sketchup, I find Tinkercad incredibly frustrating to use.