I've been designing a puzzle on Google Sketchup to be printed on shapeways. However, whenever I try to order, an error occurs. Apparently my design has "non fixable shells."
Unfortunately, this is the first time I have ever used both shapeways and sketchup, so I am at a loss.
 
 If anyone is willing to help me, you can download the .dae file at: http://www.shapeways.com/model/250401/i ... tml?gid=ug
Just suggesting what to do would help!
Thanks
Andrew

 good question... the error message said nonfixable shells, so I'm going with that
 good question... the error message said nonfixable shells, so I'm going with that That might help
 That might help 

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