FSA Gossamer Crank Spider cracked
You're better off getting on the phone to FSA as opposed to asking your questions here. If it's a common problem they'll be the ones to know and they'll likely be eager to set it right. 

I can tell you that I've had no such problems with my Gossamer cranks in many years of ownership. If I were to speculate I would say that that is a defect and if the cranks aren't ancient (which they don't appear to be given your BB style) the manufacturer may well cover it.