Flaps RAISE the angle of attack of the wing while creating more lift and more drag. So, using flaps actually puts you closer to a stall which is what happened to MinnFlyer apparenty. The best flight condition you can have is washout at the tips which lowers the angle of attack thereby moving the tips further from a stall and lessening the chances of having a tip stall and rolling your plane into the ground.

Unfortunately, flaperons give you a very bad condition by putting you close to a stall. So by using separate flaps and ailerons (which are still called flaperons if they're mixed as far as I know) you can use CROW mixing instead. That RAISES the ailerons and lowers the angle of attack, but lowers the flaps and provides more lift. Sort of the best of both worlds. It also slows your plane considerably.

I've used flaperons on a few planes and don't like them for landing either. THe only way I'll use them is if I limit the flap movement so I have plenty of aileron authority with the flaps deployed, but even then I'm treading dangerously. Of course if you fly a 1 1/2 lb 3D plane then it doesn't matter much what you do because they're so light and easy to fly that you can get away with a lot of things that you could never get away with flying a real airplane.