Boeing Starliner almost destroyed by software issues

NASA Shares Initial Findings from Boeing Starliner Orbital Flight Test Investigation

1. An error with the Mission Elapsed Timer (MET), which incorrectly polled time from the Atlas V booster nearly 11 hours prior to launch.
   
2. A software issue within the Service Module (SM) Disposal Sequence, which incorrectly translated the SM disposal sequence into the SM Integrated Propulsion Controller (IPC).
   
3. An Intermittent Space-to-Ground (S/G) forward link issue, which impeded the Flight Control team's ability to command and control the vehicle.

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https://blogs.nasa.gov/commercialcrew/2020/02/07/nasa-shares-initial-findings-from-boeing-starliner-orbital-flight-test-investigation/