A400M
"An unknown design in both airframe and engines. With a company that has no military support experience, and a product which is very expensive to buy and maybe the same to operate"
If there is no current airframe then you have to design a new one, if there is no current engine that will fit the new airframe you have to design a new one.
The product is not expensive, in fact the fixed price contract is a real problem.
In time the A400M will become the workhorse of the european defense force