Unreal Engine 4.2.1 *uncompiled* source with optional files

Updated stable release of UnrealEngine source code.

**Additional software required to compile and use.

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Unreal Engine source code for version 4.2.1 (changelist 2101063)

Changes since 4.2.0:

Fixed texture streaming for static meshes with multiple LODs when exceeding the default 1gb texture pool

Fixed Paper2D flipbook components and tile map actors not rendering, sprite color not taking effect.

Fix crash when loading certain blueprints

[XB1] Fixed particles rendering as black when bounds were zero

Fixed OnSuccess and OnFail outputs not triggering for AI Move To blueprint node

Prevent triggers blocking projectiles in first-person template

[iOS] Some projects would fail to launch on device

[PS4] Packaging in shipping would not create executable

[Mac] Added Subversion binaries to default install

The attached dependency zips contain only a minor update to the DefaultEngine.ini file for the first-person template, fixing an issue where triggers would block projectiles. If you do not need this fix and are updating from 4.2, you do not need to re-download the zips.

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Official Youtube.com installation instructional for the lazy: