This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.
Running a Project in Debug Mode and attempting to open a Particle System using a DepthFade node in Material will crash the Editor with the message listed in Callstack
RESULTS: Assertion Fail listed in Call Stack
EXPECTED: No Assertion Fail
[2015.09.11-00.32.58:237]LogWindows: === Critical error: === Assertion failed: !SceneColorTextureParameter.IsBound() && !SceneDepthTextureParameter.IsBound() && !SceneColorSurfaceParameter.IsBound() && !SceneDepthSurfaceParameter.IsBound() && !SceneDepthTextureNonMS.IsBound() [Link Removed] [Line: 2222]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-21016 in the post.