My file looks perfect in both Illustrator and Inkscape. I can’t get it to open in K40 Whisperer, though. I get the error, “Inkscape Execution Failed (while making raster data). Inkscape sub-process terminated after 180 seconds.” The file consists of some jigsaw puzzle piece objects that I created that have a pattern fill on them. I have tried with all sorts of SVG options and formats and done everything I can think of in Illustrator to simplify the objects. The error makes it sound like it’s working fine, just timing out. However, my CPU usage is very low, so I don’t think that is the actual problem.
I can open other SVG files in K40 Whisperer without issue.
K40 Whisperer uses inkscape so I would see if maybe you have 2 versions and it’s loading a different one than you have run.
It is probably also using commandline features which might be causing the problem. I would also look at starting K40 whisperer from the commandline and see if there’s more info on the problem. See if there’s a way to enable more debug messages too.