British campaign Fw-200 mission CTD

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I haven't seen this mission reported as having any particular loading problems, etc. I just checked it in FMB and it ran fine as a single mission.

The only thing I am aware of with the Cliffs of Dover Campaign was the order the missions were sequenced. There is a thread that explains how to correct the sequence but I doubt that would cause a CTD.

Not sure but the problem may be reported in your log file if it's enabled.
You could also try setting Autopilot with the A key at the start of the mission to eliminate any input command conflicts with your OS and also deleting everything in the Cache folder and re-booting CoD.

It is worth mentioning your system specs, OS version, Game version, etc, as all of these can play a part in causing poor performance and instability.