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First-chance exception

When I package a project,a problem occured:
First-chance exception at 0x000007FEFCB6AAAD in UE4Editor.exe: Microsoft C++ exception: xSharedMemoryException at memory location 0x00000000005BE560.

Does anybody know what caused this problem?

Hard to tell, but it sounds like you stomped memory somehow.

Does this happen while you are packaging your project or while you are executing the packaged game? Can you post the logs? Would be a good idea to post it on the hub too with all additional information such as the stack trace that you should get.