"In the design plans for the system, the word 'main' was used inconsistently between the device that sends the electric signals, and the device that receives the signals," NASA said in a written statement. "On the signal side, 'main' meant the main parachute. In contrast, on the receiver side 'main' was used as a reference to a pyrotechnic that fires to release the parachute canister cover and deploy the drogue.
"Engineers connected the two mains, causing the parachute deployment actions to occur out of order," NASA said.
Why would the carrying capacity drop? The sourced article is full of unsourced prose http://www.paulchefurka.ca/CC_Overshoot.html
Sorry greenpeace, I'm an environmentalist myself, but this article is just a bunch of made up BS