Hi guys. I'm waiting the second answer. The file is OK; the problem is the system software that rejects the part as it was faulty -and it wasn't-. I'm waiting the green light from SW for reordering. I will warn you when SW has solved the issue. Many thanks for your support and patience
Got the Shapeways answer: "Hey Tony, I have let them know, and I'm offering them free shipping so they can reorder. If you want to tell them as well that's always helpful. Best, Andrew Customer Service Coordinator" So guys, you have green light to reorder the plastic groove inserts. Many thanks again for your support! Cheers