Just my .02 Bob, I'm holding out on installing 4.5 'til I hear all the most heinous bugs have been worked out. The whole backwards compatibility issue with 4.0 scenes kinda bothers me, too, as I had that with the ds3a to ds4 upgrade as well. I like what they've posted about being able to handle fbx files, but losing Reality access for the time being is a deal breaker for me. I'll just hang back and wait.  

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