I received an answer on this from BetterThanLife over at the DAZ Carrara forum. It seems that Carrara can't handle the way that Poser saves things across multiple runtimes. The solution is to use 1 runtime or make all your relative references into absolute.

I found that the NATIVE import works better in this case than Transposer. I had to manually point it to a couple of .obj files, but other than that it loaded everything else. Of course, now I have to go and adjust all the textures, but that's a normal thing with Carrara.

It's all fun and games...
Until the flying monkeys attack!!!