Couple of things with that file…
It’s not loading up correctly in Illustrator, it has a tremendous amount of data in it from an engraving size standpoint, and it has 141,062 nodes in it.
This is what it looks like under the black blocking layers (never seen those before), and after removing the fills:
Any one of these things can cause a load error…all three pretty much guarantees it.
All I can think of to do with that is to use a Screenshot program to just capture the image from your desktop. It will capture at a low enough resolution that it might load correctly. Windows has a Snipping Tool that works very well.
Then if you want to print it at full bed size, as that original file shows, take that image into the splitting program and split it into fourths.
Take the four splits into a drawing program and align them, then apply your outline rectangle cut (if you want one) and save that as an SVG.
Once the file has been opened in the GFUI, do just one part of the engrave at a time, setting all the other parts to Ignore. Change your LPI in each of the engraves to about 195 LPI before you process that part. And between parts, don’t move the material on the bed, or shift any images on the screen, even if it looks like it doesn’t line up any more.
That’s going to be a very tough file to process if you try to make it large sized. (If you’re doing a wallet sized one - it might not need to be split first.)
Sorry, that one is going to be a pill to process, I think. Maybe one of the other guys has an idea…which drawing program are you going to be using?