hey guys I bought a Pro license a long while back and have been away from using it for a while. So my question is it was Version 3.5 when I bought pro. Does my license carry over to the New Unity 4 Or am I stuck on the old version if I my want pro options.
Also a side note. When searching for this answer I saw a thread talking about how every person on my team that might touch Unity must also have a pro license if I Have One. How is that a reasonable request If I’m the main developer and the Artist may just be plugging some stuff in here and there? Sorry don’t mean to make waves Im just looking for some clarification.
It does not, just like buying Photoshop CS6 is a different purchase than CS5.
It is, however, a reduced upgrade price.
As to the second part. Your artists shouldn’t need a Pro license, even if they test all of their models in Unity Free before sending it off to the programmer.
However, you can’t build the entire game for free on a dozen different computers, then just compile the final build on your “Pro” machine. I also can’t imagine you would want to do that. Your programmers wouldn’t be able to test their features in the game if it had Pro features and they were running free.
The safe bet, I would say, is to be sure each of your programmers have Unity Pro. If you plan on buying several copies, contact UT directly, as they’ll often work out discount deals on multiple purchases.
So your reply got me to thinking of one other question. Can I only use My pro account on one machine? even if I own 2 or 3 different machines I use for developing.
hehe I guess in hindsight I should have read all of the EULA crap that most people don’t ever read… 
Thanks again
From Unity’s own FAQ:
“How many machines can I install my copy of Unity on?”
"Every paid commercial Unity license allows a single person to use Unity on two machines that they have exclusive use of. Be it a Mac and a PC or your Home and Work machines. Educational licenses sold via Unity or any one of our resellers are only good for a single activation. The same goes for Trial licenses, unless otherwise stated.
The free version of Unity may not be licensed by a commercial entity with annual gross revenues (based on fiscal year) in excess of US$100,000, or by an educational, non-profit or government entity with an annual budget of over US$100,000.
If you are a Legal Entity, you may not combine files developed with the free version of Unity with any files developed by you (or by any third party) through the use of Unity Pro. Please see our EULA for further information regarding license usage."