This has been happening for a while, and is still happening in the latest version. Basically if I launch a rocket with the bigger parts (Rockomax Jumbo 64 etc) and have a couple of stages for asparagus staging, the second or third stage desintergrates instead of just detaching. I often have a couple of stages of 2-symmetry jumbo64 tanks. Any solid boosters and the first two tanks separate fine at ~5000m, but when I get up to around 10km-15km and detach the next 2 jumbo64 tanks, instead of just detaching, every part of that stage (tank, engine, sepatrons, winglets) separate from each other and fly off in different directions, usually destroying the rest of my ship in the process. I often try to work around it by cutting throttle when staging, and slowly increasing to avoid hitting the debris too hard, but that still doesn't stop it from flying apart in the first place. I'm on win7 64 steam version.
