i remember reading about eifs system failures a couple years ago.
i recall the problem being faulty flashings also.
water was able to get into improperly installed windows and doors, and unable to escape, or "weep" out.
then stuff would slowly rott from the inside out...like a bad cavity!
i am not a fan of the eifs systems.
i'd take good old portland based stucco anyday.
30lb paper, wire lath, galvanized roofing nails, sand, portland, water and a radio!