Ya, I forgot to mention versions C4D r14 and Ae 2014.
Could you do me a favor and render just one frame of the file, and see if you can get the aec file to import the solid?
Any suggestions on getting around this bug? I could step back to Ae 12.2 if you had it work there for you?
I really appreciate the response, yes this is a rather infuriating bug! I'm a couple hours of work and a couple hours of rendering from being done with the project and then this....