Serialize causes crash

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 678]
Array index out of bounds: 11 from an array of size 11

That’s about the only thing that i am noticing. This occurs right before the Serialze() problem.