I've just had a customer contact me to inform me that their order has been put on hold - with no other explanation. I checked my shop to find that that particular model had disappeared. I eventually found it in my models and Shapeways has now set it to NOT FOR SALE - but without any communication whatsoever to me, the shop owner. I've no idea what is going on. I just printed the same design for myself a few weeks ago and it printed just fine with no issues. On checking the model page I get a message: Unfortunately this version of your model cannot be printed successfully in one or more materials. These materials have been marked as "Update Model to Print" in the Select Materials list when editing this model. For more details refer to the email sent and/or contact firstname.lastname@example.org Okay - I checked the Select Materials list and there is nothing marked in any way and when I click the link I get an OOPS we can't find the page you're looking for message. Wouldn't it be nice if Customer Service actually provided a service to their customers and didn't leave them completely in the dark?