If you're having trouble uploading your design file, we can help!
Email your file to firstname.lastname@example.org and we'll advise on how to get it fixed as soon as we can.
You can also read about how to fix this specific error below:
Upload with the assurance you've got it right.
A screencast by Josh Judkins.
I've put together this video tutorial of a process you can use to self-check your design files before uploading them using Illustrator - as well as covering all the common mistakes to look out for.
This is ideal if your design file won't upload to Ponoko, or you want to be sure you've formatted everything correctly before getting us to make it...