» Wed Aug 18, 2010 6:55 pm
I'm pretty sure the game will allow you to save ability points for later, but it won't recognise that you've leveled up until you spend them.
So you get yourself to level 5 without buying any abilities, that's fine. When you go into the ability screen to buy your abilities, you have 5 points to spend. But until spend the first 4, no Rank 2 abilities are available (because you haven't SPENT the ability points yet, so you're not REALLY that level). When you're down to that last point, the only one you earned that should be buying a Rank 2 ability, is when you unlock those abilities to buy.
Don't take my word for it, but that's my guess on how it's going to work.