Yeah - I guess that's a good question but each person may have a different answer if it's worth it.

 As long as I don't have to buy the same product twice because of a new release of software, i'm a happy chappy.

I can still use my pre-C3D plants it in the old products (so I will keep these versions), but if I get a no cost replacement for the new version of software, I won't complain - and I don't feel i've really lost anything. I like the idea that the program accesses your C3D account and knows if you've already purchased the product from C3D before, but a quick e-mail to them should sort that out, as soon as they've caught up on their backlog no doubt.

It's pre-release too so again, personally i'm happy that E-On will get this sorted by the final release, but other than that i'm very pleased with everything else so far.