If you’re trying to import an SVG and it’s not working, try opening it at www.makercam.com and saving it as an SVG from there. For some reason Easel doesn’t like some of the SVG’s I make, but it will almost always accept a MakerCam SVG.
If you’re not sure how to do that, I showed it in my SketchUp-to-Easel video that I recently released, there’s a link near the bottom in this thread: X-Carve Maintenance/Troubleshooting Videos - Add Your Own!