"More than one cockup I hear."
To start with I don't think all systems aloft are "self-loading", so the this is pretty fundamental human factors / organizational stuff.
A single, mis-typed/mis-placed character is a high probability, single point of failure event which is capable of producing a max nav error of 30nm on the Atlantic.
That is a serious failure somewhere in the organization. I'm surprised Jepp is leaving it until the next regular cycle to withdraw.