Here's a problem I hadn't heard of associated with Carrara 8.5.

I couldn't get the link to work at 3d dojo so here's the post by user WX_IVAN:

"When I set up all the figures I plan to use in Carrara, I was exporting them out of Daz 3 as a collada file, then import them into Carrara and do what i have to do to get them working right there. I found out later in an article that Carrara 8.5 will acdept Daz 4's .duf files without having to export them and import them into Carrara. Well, as I rendered a few scenes, I had a mixture of collada imported and .duf figures in my scene. Mimic worked just fine with the collada imported figure, but not with the .duf figure. I thought at first that maybe it was because I didin't configure the figure from D4 correctly, so I changed the config to genesis. It still didin't work. I stopped using all of the .duf figures and switched to the imports with no further trouble."

Just thought I'd share.