Cannot convert file to STL for 3D printing

[Anonymous]

Hello, I've been trying to convert this attached model to an STL in order to print. But I keep getting an error

(Error: Autodesk Translation Services failed to translate the current document to stl file!
Error: STL Translator failed to export data).

That is on two of the parts, and everything else seems fine. I've tried different refinement settings.

[jeff_strater]

which two fail?  I've tried a random set of components (the larger, more complex ones) in this design, and it seems to work OK for me.