Unreal Editor 4.15 won't start after local changes

Development Platform & Builds
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[2017.01.23-20.36.27:105][934]LogLinux:Error: appError called: Assertion failed: Assertion failed: false && “Subclass needs to Implement this” [File:/run/media/chronix/Misc/UnrealEngine/Engine/Source/Runtime/Engine/Private/Components/ShapeComponent.cpp] [Line: 51]

Signal 11 caught.
Malloc Size=131076 LargeMemoryPoolOffset=131092

UEditor fails to start with this error, I was using it yesterday, was working good.
I edited some game C++ files, it crashed while compiling, and fails to start when loading that project.

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The culprit is in the changes you made, you probably subclassed UShapeComponent and did not implement its CalcBounds().

P.S. I edited the question header to make it less generic.