I am working on a model to be printed in full color sandstone. However, whenever I've tried to upload it, despite the model passing the automated inspections, the preview for the object is quite confusing. I've tried uploading extremely simple models to see if I can even get 1 model to upload correctly, and still nothing works. Here is a picture of my latest attempt. Its a pyramid, with a simple yellow and blue checker-board .png file at 1024x1024 resolution UV mapped. As you can see, the texture is apparent in the reflection, but the actual model is no where to be seen. The 360 revolving preview just consists of the shadow cast by the would-be model. I've searched the forums for any similar problems and I seem to be the only one who's experienced this. I am exporting to .X3D format from Blender v2.63. Any insight into this issue would be much appreciated. Thanks in advance.