Can you share the model itself? Drag it from Finder to the window where you post, or use the Upload icon (7th from left above where you type your post).
I have tried to do a 3D DXF of a basic square in a new file and it still crashes straight away. It needs to be a 3D DXF so that any holes are exported as true curves for laser cutting.
Thanks for the correction, @DaveR - I was incorrectly relying on memory, and should have looked it up.
I hadn’t thought of graphics drivers in connection with export, but limitations in the drivers seem to be at the heart of many of the problems that SU2017 users have had with the revised and upgraded graphics pipeline in v2017.
Ok, so I have new upgrade - Sierra. I tried to use SketchUp to check if it works but my trial expired.
I installed Sketchup Pro again, however the same expiry information appears.
If you’ve used the SketchUp trial for 30 days, the trial period is over. You wiill need to purchase a license to continue with the pro features. You might try contacting customer support directly and see if they would extend your trial period. Go to SketchUp.com to contact them.
The crash report indicates an uncaught exception while the exporter was trying to save fonts used by dimensions. If I recall correctly, one of the problems addressed during the adaptation of SketchUp to newer macOS releases involved changes in how the os handles fonts. Perhaps you are seeing a regression of that? What font are you using for dimensions?