It worked for the demo and not for the real version? Maybe you can specify a little more pecisely what happens. Error message, description what you have done etc. AND, what you mean "DAZ3D Poser character"? A DAZ Studio file? Or simply an object you have bought from DAZ and installed into Poser? Or maybe have not installed it into your copy of Poser? It is a little vague what you have described so far. If it is a DAZ Studio file it will not be possible to import that into any actual version of Vue.

One day your ship comes in - but you're at the airport.