I have to say as one of the main reasons why I bought a license for Fusion, Prismatic mesh conversion is a nearly useless joke. The amount of times it just completely fails on what is FAR from complex geometry, and now ohhh you probably want Organic...for twice as much as you pay for the license you already have.
Has anyone had any luck when it fails with, I dunno, tips, tricks, something? It is all but useless 95% of the time.
