I have never had any problems getting your stuff into Bryce. I do beleive that Vindazi uses a mac though, so may have problems with the Jpg textures
As long as the textures comes in at ‘import object’ stage, there is no problem.
It’s only if you wish to add a .jpg texture from within the Material Lab photo import that Bryce messes it up on the Mac.
That’s why I have taken to mapping any photo texture I need onto a primitive in Poser and exporting it as an .obj file, then import the ‘obj into Bryce so that the .jpg texture is available for me to map onto which ever model I need it for, then delete the imported primitive.
It’s a slightly longer way around but it works fine doing it that way.