Thanks to a particularly knowledgeable insider who spotted the importance of these documents I have been able to publish the newly-disclosed evidence in full. They're the documents on which the BBC based its Chinook Mk2 coverage yesterday.
Chinook Mk2: we publish new evidence of computer problems (Tony Collins's IT Projects Blog)
The documents don't show that software caused the crash - but they are unequivocal in showing that the Mk2 wasn't airworthy.
Whether or not technical problems set off a chain of events which led to the crash on the Mull of Kintyre, and whether or not the RAF was right to blame the pilots, there’s the separate question of whether the helicopter should have been in the air in the first place.
How the Mk2 came to be given a CAR and RTS without the software problems being remedied is baffling. That alone is a good reason for the MoD to persist in blaming the pilots.