You'll need to provide more context as to what you were doing and expecting, and will need to attach the CRASHLOG.TXT from your install's GameData directory. At a glance this crash it's attempting to process event packets still coming in for a closed/deleted server connection, which shouldn't be a repeatable case unless you're rapidly attempting server connections using a flaky networking setup.
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You'll need to provide more context as to what you were doing and expecting, and will need to attach the CRASHLOG.TXT from your install's GameData directory. At a glance this crash it's attempting to process event packets still coming in for a closed/deleted server connection, which shouldn't be a repeatable case unless you're rapidly attempting server connections using a flaky networking setup.