UE4 Crashing when creates TIMELINE in level blueprint

Seems weird, but I have tested a lot. Everytime I open level blueprint I can do whatever I want, but when I try to create a timeline, before even do anything UE crashs and close.

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000
msctf
msctf
msctf
msctf
msctf
imm32
imm32
msctf
msctf
msctf
imm32
imm32
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_Slate
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

I can’t do anything… Any idea?

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