BMW 745Li E66 - gearbox.

Hi I have a 745Li (2002), which has 28000 miles on the clock.
Today I came to start the car, but it reported: "Gearbox fault, drive cautiously, danger of gearbox failure"
Within a few seconds, this changed to "Gearbox failsafe, do not drive"
Then I also got "Safety system error: seatbelt tensioners, airbags.... are not operating"
I called BMW emergency service without driving the car. They came out to see it, and ran a diagnostic. The guy then reset the errors, and put the car in gear.... the errors all came up again.... He continued to drive it, and said it was an ECU problem, and to take it in to the dealer. I was obviously reluctant to drive it, but he told me to drive it in.
I did so, and I am awaiting its repair.
Has anyone else had this problem?? or similar??
Paul '02 745Li '00 740i Sport '98 740i Sport

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