STL File Non Printable Help

I made the attached STL files but they are being listed as non-printable (during pre-flight for Cube 3) on cubify.com. I tried repairing the file to the same result. I used 123D but not sure what is wrong with them (so I can learn and fix) any help would be appreciated. I have a 3D Systems Cube 3 Printer.


Thanks


File links:


Original 1: http://cubify.com/Store/Design/H8AXWSG1QH
Repaired 1: http://cubify.com/Store/Design/JQ2WF4HXUS
Original 2: http://cubify.com/Store/Design/RFIYUH22FQ
Repaired 2: http://cubify.com/Store/Design/A4F7FYSW4L

netfabb says they're OK, although they contain multiple solids. Have you tried running them through the online repair tool? https://modelrepair.azurewebsites.net/